Class 10th Science - Complete Physics in One Shot🔥| Important Questions | Prashant Kirad

0:03 I have always smiled and hidden my sorrow Time will tell people who we are and who we are Our time has come, this is the time when we I am going to silence all those people so hi Everyone I am yours Prashant Bhaiya, I have come again to this same place and same time and it is good to finish physics Brother, today you are back from Physics First of all there is enthusiasm in the chat about the marathon tell me how is the josh meter energy meter How is your level? Comment and tell me How is the energy level? How is the josh meter? Tell me brother, tell me quickly, I will tell you quickly My energy ad has arrived from Team Team Ji

0:49 It is requested that please remove the ads of all these turn it off turn off monetization Isn't it so? Yes, stop this monetization quickly. Do it quickly so that people can come, let's go everyone Have joined us, how is the energy How is Josh? Let everyone know quickly. How are you All, we had a chemistry marathon yesterday I hope you understood everything inside it you are in the chemistry marathon Did you enjoy your whole concept? All your doubts would have been cleared did it happen or did it not happen tell me the truth did it happen were there no lag son those

1:36 youtube2 video stops playing when More when it becomes too much then it's ok There is no lag from our ad, ok done it is not a lag from our hands, son Poor thing We will finish it within four hours, now be careful Do you want to understand brother, that is also there in physics Is there going to be a chemistry game? I wonder if that is also present in physics Is there going to be a chemistry game? Brother, whatever you teach me, I will learn Physics too. I said whatever you will read today will be your paper. going to be very important for is the level at which we are going to ask questions

2:24 The level is going to be very dangerous because I am saying again class 10th boards Physics is going to be a little tough in the exam I have been telling you since a long time Even today I am talking about a little physics If it is tough then I will ask questions of the same tough level Today I am going to show you that I am not a lie I will say that yes, the paper of Physics will be easy Take it brother, no, I will tell you the clear reality that physics will be a bit tough now bhaiya how I have to do it, how to study, will you tell me something did you bring anything i said absolutely what have you brought yes I have brought this, I have brought this, where Your one chapter of the whole physics This will be finished in just one page Your chapter of light is light which is very big

3:09 Don't you think this looks like this this much finish finish the whole light chapter inside this It is over and there is no need for any paper from outside So this is our cheat Notes cheat notes son this doesn't mean that you fold it like this you fold it like this Fold it immediately and then your pocket put it in and take it in the exam, not this do cheat notes son that means exam You have to revise them before going to the bus you are going in the car once You have to turn the page but today we will get into the details If you are going to study then come already 220000 children have joined, what a thing brother you are very smart let's see which one Start with the chapter, which chapter start tell me look i am thinking this I am not going to tell you anything about electricity today.

3:58 let me start it okay why because The chapter on light is very interesting for many kids. I had read it in Half Alley as well and kept reading it again and again yes but where is your problem where is the problem your problem It is in electricity, do you remember, it started I would start with my electricity right son, do it with electricity start ok hey a kid is saying r Chapter of Environment R Environment Bio yes they will do it tomorrow tomorrow is bio and listen My talk will be on the 19th at 5 or 600 p.m. There will be a session in which the whole science will be discussed. Revision will be done in a new way I will get the revision done by new methods and not the normal ones and then on the 20th morning you will You have to come at 4:00, so you need to tell him that no come come let's get started let's start let's start

4:43 Let's start it okay okay brother Josh The meter is high, start with electricity Let's do it son, we will read the light as well I will study but let's start with electricity okay let's note down the important topic brother Note down important topics quickly First look, each chapter has four chapters those important topics like your light Mirror formula in numerical value of light lens formula power of lens as Snell's law and all ray diagrams are same These three are important in your human eye If you see the series in Electricity Your derivation of parallel is also Important questions are also asked There is a question on this formula of yours too they come and also appear on the graph of Ohm's law and cost of electric appliances today I will tell you how A small magnetic effect needs to be extracted There is a chapter but Flaming left hand rule

5:30 Solenoids are very important You will read all these things in detail out of which mainly your paper would have been made hey done son, hey done, hey done, hey come on, come on come on let's start let's start What start come on brother son Prashant Bhaiya It's not fire it's wild fire it's wild fire remember keep it ok come let's start like this Energy is same in the beginning even after 4 hours You will get energy brother, don't you get tired? No, I am not tired, but it is fun, come on Let the electricity guys start You will spend time there quickly with the chapter We will apply it where the concepts are a bit difficult It will be where there is an easy concept, son. It will be alright, come and see

6:16 Brother, first of all if we have electricity If you want to transfer then do three types of things One is a conductor and the other is an insulator What is a semiconductor conductor that that allows electric current to flow What is an Easley Semiconductor that allows a small amount of current to flow and What is an insulator that does not burn? This is very basic for flowing the current Things are conductor, semiconductor and insulator What is the example of copper and aluminum? What is silicon and its semiconductors? What is the example rubber which is your There is an insulator, okay brother, look now Here comes the starting chapter of this chapter Where does it start from, hey brother cheat Where will you find notes Cheat Notes When you After the lecture is over you will If you find it in the description then don't worry we will see it right y to fear one prashant b

7:02 is here friend come and see brother what is the charge hey what is this electric charge bro what is this electric charge Electric charge is one such property property what happens to that cause experience of force due to which If a force is applied then the electric charge What is a property and how are charges made Some charges are positive and some are negative okay brother now tell me this what is the unit of electric charge What is the unit of charge coulomb It is coulomb, we write it as C right son what do we write for this Let's write Coolam, very good now Look son, there are some properties here What are the properties of this charge The first property of a charge is that Charge is additive in nature i.e. a body is

7:49 on top of that body, suppose that body Above is one cool charge 2 cool charge 3 If there is cool charge then what will be the overall charge tell me in chat on that body tell me in chat Brother, tell me quickly a very obvious thing Brother, we have to add it, what is this I did it, it's very simple, yes, so how much 6 cool charge will be very simple Simple, if there is nothing new then this property is called an additivity of charge i.e. charge on a body overall we can add it okay the second thing is charge is conserved Bhaiya the charge is not like that which change more charge can neither be CreateDrawNavigator The next thing is charge is invariant, that is, if You move a charge at a velocity

8:36 So the value of the charge will not change, the charge remains the same It will be alright son, your next two I am not a friend like the one who is charged for the exam At what time does he tell you that brother I haven't read anything, sister; I have read something I haven't even read the book yet I will open it and read it on the last day, last day I will study and if he tops then so be it There is no charge, charge is invariant charge does not change and the last and most important Property Quantization of Charge what is quantization, it happens son Quantization with a simple example I understand, suppose you went to the confectioner's Who all have gone to the confectioner's place? Have you gone? Have you gone to the confectioner? Yes, to the confectioner You went and told me that confectioner brother Give me half a kilo of sweets Give me 1 kilo of sweets Give it to me just like you ask for it, if you can imagine You are going to the confectioner and saying that Bhaiya Me No

9:22 What if I give you 22.3 grams of sweets? will say confectioner brother confectioner brother will bring it out Our confectioner brother will take out his slippers and I will say, go away from here, this is what will happen Son, it also means quantization of charge This is what happens when you charge a value I can take it, that means you can either say that Give the charge of an electron Give the charge of the electron, give it four Give me five rupees, you cannot say that 12.5 Give the charge of the electron No You can ask for the charge just like this electron two electron three electron four electrons and that's what's called its Is quanta emission of charge correct? is a multiple of electron charge good Always remember that the charge of an electron is how much is 1.6 * 10 repa -1 coulomb

10:09 Will you remember, son? Tell me quickly. Will you remember? And keep reminding me to drink water You are a very dirty person, you should drink water Why don't you remind me why don't we get it for you brother come on come on Go dun dun brother dun, I understood till here. Till now I understood, all is good, all is good, let's go. Great, now let's move on, now this is one Let us ask the question i.e. quanta ization of A formula emerges from the charge What does the formula do Total Charge on Any body i equal to n * e n what is the number of what is electron and e is charge on one electron which is 1.6 * 10 rate Power -1 Coolam what a thing, have you become smart

10:54 so what question are you asking how many electrons are there in one coolum of charge How many electrons are there in one coulomb of charge First of all see how to clear the exam I am telling you how to write whenever If you have any questions then look at what is given I know I've given you the charge The value of q is given to me as 1 Coulomb gives me the charge of an electron I know the value which is this much what is the number of electrons to be found out how Brother, please find out the formula, please see take it look take it take it I am coming I am coming understand I am understanding I am understanding very good okay Brother, now tell me what should I do? Just 1.6 * 10 Pa -1 now this is basic maths son this here take it take it here so when you n If you calculate the value of g then how much will it be It will come to 1 / 1.6 * 10 Pa 19

11:43 Calculate and tell me how much is coming son You are very good at maths I am either smart or not in maths Whether you are smart or not, you are smart, if you are brother If it is correct then you will calculate what is coming The result is 6.25 * 10 rate power 18 three electrons yes yes so such questions Normally two questions can be asked He will tell you that the charge is 10 coulomb how many electrons will be there inside it then You can solve many basic questions It's simple, let's move ahead Let's talk about electric current There is current, right? And that was the song, what was it, friend? that friend, that song, what was it that you got a 240 volt electric shock by touching it You had to sing like this, 240 volt current was applied

12:30 what was it ok yes so elect your studies I'll come back and play the song later Otherwise the copyright comes, son, it is very are dirty That means what will be your current by charge time yes they are singing a song it felt like 440 volts by touching you Oh what a great thing you are very smart Are you done? Tell me, isn't this the formula? Now you can take out the current from the current

13:15 what is a unit son what is a unit what is the ampere of current Son, what is an ampere, son? ampere is ok well now what will be the question that define one ampere define one ampere This question has been asked many times, so a How will you define ampere? One ampere is the is the current when one coulomb one coulomb See one coulomb of charge is passing through a conductor in one second in one second then I What will I say then, son? Tell me brother then I will say that What is current, one ampere, I understood it very well. Now let's understand one or two more things here. Look, accept that this is your battery, accept that This is a battery so do you know the current in the battery?

14:02 I will tell you where it flows from and where Always remember the current always flows from positive to negative i.e. current then This is how the current always flows from positive to negative is ok to positive end of battery goes to the negative end good positive And how will we know the end so the bigger one is this symbol is positive it is small is going to be negative okay next This is the thing, how does the current travel through the electrons Have you ever wondered how an electron moves? it moves tell me the electron moves Always remember this thing to change the positive from the negative Brother, the electron goes from negative to positive The current goes from positive to negative Assertion is important in reasoning The question has been asked repeatedly and it is still visible I will put it in your paper as well Assertion reasoning can get you stuck, okay let's go brother

14:48 isn't it and look, there is little assertion reasoning these days If tough things are coming from here then don't be scared if you understand the concept So you will do assertion reasoning also, I am just nervous don't let that move ahead potential difference is this What is this brother, potential difference Look brother, accept it, accept it, you were somewhere far away It was somewhere far away but you had your exam Brother, you were so far away, I told you I caught you and pulled you out from there to yourself because I had to teach you So I pulled you from there and then The work that I got done, the work that I The work that you have to do to pull it from there The potential difference is called work, i.e. potential difference is the work done to move a The charge is one unit charge i.e. one coulomb

15:37 If I transfer the charge from one place to another I will bring what I work for I will do the work that is called mine? It is good to remember the potential difference definition now here is the potential difference What becomes the formula potential The formula for difference becomes do work done By charge this formula becomes good what is its unit tell me the unit brother speak speak speak make a glass of water hey narendra modi ji is back again Modi ji in chat, hello, how are you, what did you say Modi ji is here, will you take the paper Modi yes, okay, ok, when will I meet Modi ji? when will I get my exam paper ok ji very good ok what should i tell you that work is done bye

16:23 what is the unit of charge Its unit is volt does it have y unit volt is it ok define 1 volt define 1 volt 1 Volt is the work done to move a unit positive Charge it, see son, 1 volt is the work How much work will be done when 1 joule of work done on charge of one coulomb then my potential to move the It will make a difference It will happen, you understand, that is, when one joule of work I will do it to move the charge of one coulomb So my potential difference will be will you call me very good okay brother Done done, let's ask some questions from him You will get more clarity, come, the voice is not coming

17:12 why not come As for those, who are getting less volume, right? I am going to tell you a very good feature There is no such button one by one in the mobile son, press that button as you like this If you press Tuk two-three times then what is the use? it happens the volume gets louder means a lot It's a big miracle, son, you will do this, right? The volume becomes much louder than that, so a try it once ok come on how much Work How Much Work is Done in Moving a Charge 2 Coolam Across Two Points Having Potential Difference 12 Volts View Now What is the approach? I am afraid of physics Everyone gets nervous due to physics, this is the solution what is a solution the solution is the most First write down the givens, I don't know anything, write down the givens I don't know how to give anything, write it as given That means we have given charge 2 coulomb per second What is given to us is potential difference

17:59 given is 12 volt extraction what is work done Now think which formula will work brother The voltage used to be equal to the work Done by charging, apply it now, apply it now, ok if it is there then the work will be done, this will happen Multiply them both and you will get 24 This is what is good for everyone now something else Never forget to put units in the paper And when you put the unit in, the answer will be like this lock it inside a box, lock it inside a box Capturing the answer is very difficult, setting up a unit It is important, if you do not install the unit no day is very bad okay let's go next is next a current of 10 amperes flows through a conductor for two

18:46 minutes a current flows for two minutes If it is there then first of all write given brother current What it is is 10 amperes now look brother two minutes now don't convert it into seconds forget how much will it be converted into seconds time will be 2*60 which will be 120 seconds come on brother next calculate the amount off charge first you have to remove the charge Do you know how to remove the current? If that charge is by time then what is the charge there will be charge current into time then just What you had to do was multiply these two had to do what would have been done Did everybody get 1200 kulam? Did everybody get the same? This is coming tell me brother he is coming he is coming very good very nice next if a

19:33 Charge of an electron is 1.6 * 10 rate Power -1 coulomb then calculate the number of What is Electron saying now? Number of How to remove electrons, tell me how to remove them we have given current we have given current we have I have taken out the charge too, do you remember Charge equals to remember the charge given to us which is 1200 we need to find n and this is 1.6 * 10 to the power-1 all you need is You have to do the calculation, nothing else what do I have to do calculations have to be done what calculation do I have to do bhaiya but calculation I am not able to do the calculation myself Where can we little kids go hey little kid, simple calculation Understand this, when you take it here then it

20:20 The 10th to power -1 is positive It will go ok so it will come 1200 di 1.6 * 10 re to pa 19 now this is one point out of 16 If you remove it, one more zero will be added, okay? Son, now divide this, with whom should you divide it? If you do this and divide it by four then this will become 3000 divided by 4 is it in 10 rate power 19 Now cut it one more time, whom should I cut it with? Cut it by four only, cut it by four only, son how much will it cost 75 75 in 10 to power this is everybody is coming very good very good ok if it has to be done like this then Do not make mistakes in this, if you make mistakes Brother, many mistakes will happen in life

21:05 mistakes and many regrets what happens Isn't it true son, sometimes a person makes a mistake If he gives it then he will regret it later It happens, okay, then you should not make this mistake You should do this, don't make this mistake Otherwise, your parents will think you are a mistake. You will look ok Come on brother let's see next electric circuit electric circuit ok Inside an electric circuit we can see some I will see the components etc. friend, don't laugh Do it friend, you would have been beaten badly, don't laugh, don't be fat Friend, what is the mistake in the calculation? There is a mistake in the calculation, what did you do? What happened? What is the mistake in the calculation? Children are writing, brother check the calculations I have done it once, what is the mistake? What is good in calculation here

21:51 One more zero will come on 750, now it is 750 * 10 to the power yes 750 one zero and come Brother, okay, this is a zero, this one was a zero, right? I haven't put it here okay come on come on go ahead and get it done next electric circuit You must understand electric circuits, son. What is an electric circuit? Electric We need to understand some components inside the circuit and those components are very important What are the components, son? Look at the components, it comes first your electric cell is your cell what does that look like a positive terminal a the negative terminal and if we have a lot of cells combine them together then you know what It is made, what is battery made Son, a battery is like this There is a combination of sales, just imagine This question should be asked about a cell 3

22:37 Volt is the potential difference of a cell 3 volt here three are added to one To make the battery, tell me this, tell me this what will be its potential difference then You know what you need to do with all three Add 3 + 3 + 3 and it becomes 9 Volt is ok son don't get confused come on now comes the open switch close switch if If you see a dot, this dot means this It happens that your switch is closed i.e. The circuit is working if this dot If it is not there then it means there is no circuit Let's move on, this is what happens to you Resistance what is this resistance we will talk about that later okay Apart from this there are two important things one is There is an ammeter and another voltmeter, look brother, this It is an ammeter, it tells the current and volts

23:23 What does the volt pea tell you about the voltage okay the next thing is telling you something There is a difference between a voltmeter and I want to tell you but before that if If a question comes in your paper then draw a schematic diagram of electric circuit what will you make draw a schematic diagram of What electric thing do you want to make? You just have to make it Look, put a battery in, put a bulb in give me an ammeter and put in a switch If you can make it, tell me quickly brother What is a rheostat, son? Rheostat nothing is important for you i am your It doesn't even come but I'll tell you rheostat is a type of variable There is resistance, that is, its resistance changed its resistance can be changed ok so you asked for this schematic diagram If you go, you will make it, it is very simple, come on let's go

24:10 Moving ahead, now we will measure ammeter and volt Now look at the ammeter And understand the difference between volts and ammeter. What is ammeter? Ammeter tells the current, voltmeter tells the current This tells us the potential difference, this tells us no tell me yes tell me brother one thing brother I slept No, today these are your notes from the boards My neck starts hurting when I'm dizzy does this happen with you as well Does this happen to you as well that you Why don't you sleep? Why does your neck start hurting? yes I don't know come on let's see Electric current and what it tells us It tells us the potential difference, let's see further Now look at the ammeter, we will see the ammeter We represent volt peas by A The next thing is represented by v, ammeter Always connect in series, remember

24:56 in series while keeping the volt meter in parallel I connect it okay the ammeter which There is resistance, what is it? The ammeter itself has very little power The resistance is very low and the The volt meter is very high its resistance is very high It happens like this about the resistance right now we will talk further, okay this is main There were differences between them, let's move forward now Let us come to Oms Baba Oms Brothers, say Jai to Baba, Oms Jai to Baba Let's do it once, let's say Jai Om Baba Now everyone should understand, son, what Oms Baba is saying Who had gone to Om Shri Shri Shri Shri Shri Shri Oms baba ji came and he said that friend Prashant tell me one thing I said tell me Oms Baba then Oms Baba said that friend is a conductor yes i said that current can flow through it I said he is doing one of them

25:42 I have said that there is a potential difference, so this The potential difference is due to the current I said it will be directly proportional ok oms baba its sure he did He said yes for sure that means a current carrying Whenever current is flowing in the conductor So it will be directly proportional of that conductor of potential difference What is the potential difference placed around directly to that potential difference proportional will be at constant temperature Very Important Children should not write this down Coming to the definition and here is the examiner ji their eyes shine their eyes shine She goes and says oh there is no temperature It is written that your marks will be deducted, you become happy If they go, don't let them make you happy

26:29 isn't it so now that means it means that v is directly proportional to come here now what do we do with the sign of proportional add a constant to remove which is it r aa what is the resistance bhaiya what is resistance what is resistance there are obstacles like son if your life I am not that it would not have happened or if it had happened then you too would have you would have been reading right now i am reading right now Before this, it means studying a lot in life You must be topping the class, right? But resistance has come into your life It did not come but the interruption occurred similarly Similarly, when a current is passing through it The obstruction which comes in the path we call it what is resistance then resistance is the Property of conductor to oppose the flow of

27:14 Current means the force that stops the current We call that your resistance The unit of resistance is hey om what is om ok then only I I call him Om Baba, it's okay for me I say Om Baba, okay then it becomes Om what unit of this did you understand next Now look at what kind of resistance there is Depends on the most important things This is what things it will depend on Resistance, I tell you, resistance Don't think of resistance as traffic think of it like traffic if you are a you are going on a long way ok It's a long road isn't it, go on a long drive yes so you are going on a long drive now bro It's a very long way so there is no traffic

28:00 Are the chances more or less? more i.e. if the length increases then what The resistance will definitely increase because Resistance is traffic okay length If it increases then the resistance increases, imagine another thing you are going on the highway and the highway is very It is wide, meaning the area of ​​the highway is very large If yes then will the resistance be less or more? It is obvious that it will be less, why will it be less? Because the area is large, the traffic will be less. will it go or the vehicles will pass comfortably Similarly, if the area of ​​a conductor increases then the resistance will be less i.e. resistance is directly proportional to length Resistance is inversely proportional to How will you remember the area, traffic examples you will remember me from this very good come on now one more

28:48 The thing is to understand that your resistance is also proportional to the temperature that is if you If you increase the temperature then your resistance will increase It increases and one more thing is resistance Depends upon the nature of the material Each material has its own nature and We call nature resistivities Sivi, its symbol is this, we call it isn't it a cry isn't it a cry this one that don't cry when you get your result Your father beats you and you cry I am not crying, this is its symbol, we should cry for it They say resistivities has a property of its own okay resistivities also directly proportional to resistance so finally who

29:34 The formula comes out, I will tell you that I will give it to you and you will see it here as well that resistance equals to row a ba a remember this I will remember to stay, son. Tell me quickly, what do you remember? I will keep you drinking water Friend you are very good since when have you become so good How come you remind me of water? how are you so good Wow, you have become so good in one day You have become so good in one day Yesterday no one was reminding me today brother drink water brother drink water brother if your What will we do if our throat gets sore? You will get stuck in the middle, come in the morning, come tomorrow too

30:21 I have to come the day after tomorrow also, come even at 4:00, I am scared Now you have been caught, aren't I? Let's cry, if you understand this formula If you understand then many questions arise in this Today I am talking about resistance equal to row l / a on this formula almost every one You will see the question inside the set 101 Q And I'll show you right now how You will see the questions, okay come on let's move forward See a question when a 4 volt battery is connected across an unknown register there is a current of 100 milliampere milliampere What does milli ampere mean it's 10 to the power -3 okay next in a circuit find the value of resistance I want to tell you about the resistance, what will you do Oms Baba

31:08 hail to v = ir1 i bus bus v what is the value of v The value given to us is four i what is this Solve it, how much will you get son, solve it If you solve this, then it will come out A will go 0.1 0.1 so this will be your 40 ohm 40 ohm what is 40 ohm what is 40 ohm Everybody is doing great, what's the matter friend You have become very smart, my friend go now ok one more question many times It has been asked which graph is above the graph Above the voltage current graph I will tell you I will explain it to you with examples What do I want to see from you son, whenever

31:56 This graph will be made of voltage and current, right? you will always see it like this It will be visible from here and this line, this line Who will she tell about the resistance? resistance is okay okay now imagine Imagine this graph turned upside down The graph is inverted i comes up and a comes down so now this line is there, you know this line who will she tell 1 / r will tell 1 bar r ok now how will the questions come Bhaiya, I will give you a graph Now let me show you a graph given below: The graph is given by a graph like this and he will ask you this is one and this is Whose resistance is there in both these graphs? Whose resistance is more? How will you find out, look inside this graph which

32:43 The higher the level, the greater is its resistance who is higher up who is higher up If there is forest above then its resistance is more ok ok ok but this is the question It can come by way of a trick, how can it come by way of a trick may come let me explain it to you see Brother now this graph will be moe moe with you look and tell me the answer look at this graph and Tell me the answer son which will be above in e graph The one which is lower will have more resistance His will be less but now inside this question Look the graph is upside down here ivy The graph is IV IV graph as in the graph If it turns upside down then the whole system turns upside down It happens the system crashes ok system it crashes because inside it What happens is that your gruff is the most

33:29 Its resistance is the highest at the bottom if it turns upside down then the most important thing in it is Who will have more, r2 will have the highest Whose will be less than r2, r1 and the least Whose will it be, which option of r3 is matching which option is matching DD The option is matching son is doing it or not yes it is very good what is the matter when such questions come and the kids remain confused in this don't be confused, we will do it ourselves ok i was just talking of resistivities then the same resistivities let's start doing it now okay son Resistivities Understand the difference between sense and resistance okay then we will solve the questions tell me will you start doing resistance

34:15 what is resistance when current is flowing through a conductor then the property opposing it There is resistance but there are resistances This property has resistivities but it is not Resistance can change from length to area butt resistivities ti resistivities There is property but this is material property Is this not a good resistance unit? It is ohm what is its unit Does anyone know, if you don't know then remember me bhaiya Its unit is resistivity Now let's have a real test of your brain

35:01 from where your questions will be asked Now the real test of your brain will come go see Just look how much power it has, brother wire of resistance 10 ohm is drawn out so that its length is thrice its original length now In the question, first look at what is given you have just given normal resistance Look at this, normal resistance is 10 ohm given what are you saying that the wire was pulled is drawn out means it has been pulled out When I pull the wire, assume that my What is the new length? It is three times three. It is a guna but when I pull a wire son Well then I know what happens, what happens tell me to grab a wire anywhere

35:47 grab it and pull it what will be the length If the butt area increases, it will decrease you fools The area will not reduce, it will happen now when brother The length is increasing and the area is also decreasing How will we know how much the area will reduce? You will know volume by volume remains the same and the area becomes volume into length i.e. the more the length increases The area will be reduced, the length will increase by three times Then the area will be reduced by how much? The area will also be three times will be reduced now I have to tell you that new What will be the resistance of the new The formula for resistance would be Ro new l and new area because look Resistivities

36:34 what is a / 3 now concentrate on the calculation here so understand that this is divided by 3 this is 3 up will go into multiplication then this will happen will go 9 9 cry l/a good cry l/a's what was the value what is row l / a Resistance and the value of resistance give us given look here this is given to us 10 so That means its answer will be 9 in 10 which is It will be 90 90 ohm 90 ohm tell me whose came Done oh wow so many kids got 90 OM what is right Friend, I am again asking questions about resistance Questions related to shifted resistivity will come in the paper

37:22 Okay, next is a wire, resistance aa a Resistivities to the resistance if the length of the wire is Doubled if we doubled the length and keeping The cross sectional area is same if the area is same tell me what will happen if the length is doubled Resistance will also double Gee resistance will double ok next what happens what happens to the Resistance if the cross sectional area is If I cut the cross sectional area in half I did it and kept the length same, now what? If only I could take care of Aria, son. half resistance is inversely

38:09 If the proportional to area is half then In this case the resistance will double The answer will be double inside as well, what happens next to the resistivities the material of the Wire is changed if material is changed If resistivities go then resistivities will go It will go ok Son, listen to me, resistivities Here is two wire A end on top of your screen bee of same material having same length and Diameter 0.2 AA and 0.3 AA i.e. two wires the material is same i.e. resistivities

38:57 The length is same but the diameter is different friend The diameter has changed, okay, what is it saying now? what are you saying which of this to wire will Which of these wires offers more resistance It will give more resistance, see resistance The formula is Ro l / a now Ro also It is the same. If it is the same then everything depends what is the formula for area on area you have the formula for area Do you know the formula for the area of ​​a circle? It is Pa square, which means, whose The radius will be greater and its area will also be greater will it be yes or no yes or no tell me now there are two diameters how to find the radius Divide by two makes it simple so these Which of these two has an area

39:45 Tell me it will be more, it is obvious bhaiya Its area will be greater now whose area Its resistance will be less now Were you caught? Yes, that means this wire The resistance will be high and this wire Will the resistance of the device be reduced? Understand this what did you understand tell me quickly Tell me quickly because it is asked in the question Whose resistance will be higher then ours The answer will be wire A, this one is wire A Why will its resistance be higher because its area is less, so the area is less The resistance is high, tell me if everyone has come foolish kids this hasn't come come on come on done come on The next question will appear on your screen, this is I was in a case of four wires of the same The material is four wires of the same material

40:33 the resistance will be minimal if the Diameter and length of the wire are given below: You have to tell in which case you are Which case will have the lowest resistance? Tell me inside, check these and tell me brother Please check and tell me brother, first case length should be low to reduce the resistance reduce the length and increase the area reduce the length More area, less length, more area, less length Where is it less, the length is less here, right? and where is the area more area where is the area more here now there is one Check all these again and again and put them in the formula l/a put it on that formula r o l/a that Put everything in the formula quickly Put it in the row l / a one put this first

41:20 Check it quickly, it will come r/4/d/2 isn't it okay wait a minute a minute a minute wait a minute one minute oh this is too much This is a good question, we did not even note it down This is a very good question, there is a lot in it Children will make mistakes, see brother, don't go inside this Diameter is given but area is not given the diameter is given and you know that if I want to find the area from the diameter so I what would i do is i square the diameter yes, it means the square of the radius hoon pa aa [ __ ] that is area area dekho square me to find the area What will you have to do? If it has to be squared then what is its area if it will have area then you can assume it to be like this

42:05 ho d s / 4 will happen right because I what should I do brother tell me this It's a very good question, it's a tricky question I need to square it to find the area What is the formula for pass right brother yes so this is d s / 4 of this look what is this it will happen to d s / 16 Look at this, it will cost how much it will be will go to four d square and this will become 16d So you are able to understand clearly It is clear to me, son, that the most Who has the most area? Who has the most area? this is it, who is understanding this Tell me which has the largest area tell me which one has the largest area how much is 16 how much is 16 so what is the answer

42:53 Gotta have a D DD very good very good that means we What did the diameter give us We found the area from the diameter we found the area, look at the resistance if If you want to take the lowest one then at least one The area should be more and the length should be less area should be more, length should be less There should be these two categories, these two these two are the criteria what are these two The criteria is to solve everything once Let's see if I made any mistake, son. yes let's solve them all once and see Come on brother now you put it in, son Check Ro l Ba 4 and how much it is coming here comes 4d squ here comes 4d squ 4d check then this will come out ro a 16d check

43:41 Keep doing it son, now check the B part Do check the B part quickly part can never be a B part I don't know when I'll be in any condition could be part b maybe one minute Friend, what mistake have I made? I must have made some mistake. friend what mistake did we do We made some mistake, wait a minute What was its value Its value d 4th ok ji ok this is what i am saying that we I have made some mistake here, please check it sk by d s ba 4 this is what's coming yes so you You will check it, right son? No matter how many times you try to check If you do it then it will become like a body sac yes that is correct d answer will come d is coming no tell everyone quickly is D coming right yes yes it is right it is right it is right D it is right D

44:27 that's right because inside it you have If you check the area then which has the largest area The D one has the largest area Then that will be your correct answer, right right No right, here we made a mistake in calculation We were going to do it but it's right, everyone has come Tell me quickly after understanding, everyone is checked, let's go next Move on to the next concept Come on let's see the next concept this is second concept son come come What is your next concept series? Combination Series Combination Parallel Combination Can I ask for their derivation? The answer is absolutely, it can be asked

45:13 How can I ask this, son, try to understand do listen listen listen how can you ask can and what is their derivation technique I will tell you the exact technique for remembering I will give you series and parallel till now You must know the meaning of this, look at this It's a series son, everybody knows this is a series and Parallel means let's say this is r1, r2, r3 what is this this is a series now son series I want to remember one thing, it entered my mind How to differentiate same voltage from current in low series will you remember me Current same voltage different is ok i.e. series I also told you how to remember it inside what was the way to remember In IV series current is same and voltage is different

46:01 s i v not hiv this s i v me I know you are a biology student. I know you are a biology student right? cheat sheet will give cheat sheet after the session ok yes it is S IV then what is the same in the series current same voltage different in parallel what in parallel the voltage is same and the current is different ok son very correct Now see how to remember its derivation Ask yourself the first derivation trick Who is changing, brother? It was me who changed. I said no no no I won't go there to change who has been here i.e. who is changing here then You can clearly see who is in the series tell me who changes my love If the voltage changes then write it down. Write what? Write it down, son. Look carefully and understand it, son. Here the voltage is v here it is v1

46:48 here is v2 here is v3 so write it down = v1 + v2 + v3 I wrote it brother now it is ohms Baba should be called and the formula should be applied What aa equivalent overall net resistance Whatever we want to take out, apply current here. The current will be the same in all of them, son Let's keep watching, the current will be the same in all I will be the same, now take this aa as common to all three cut out and from me cut out i then the final result remains your r ect ect r1 + r2 + r3 kiskis I understood this concept very well So what did we get out of this? Whose equivalent resistance did you find out? Now brother how about parallel for the series We will find the parallel one, it is the same, son

47:34 what do you do in parallel in parallel you yourself Ask who will change what I said It will change brother, it used to change that is a different matter Son, who will change here, think in parallel Just imagine for once that this is such a circuit Suppose there is a circuit like this which is in parallel connected to a battery ok this is r1 This is r2, this is r3, here is the voltage who will change it, the current will change here current i1 will go here i2 will go here i3 will go and a current will be going from here So the first step is to write who will change. = i1 + i2 + i3 I said very good Oms baba please come again Oms baba what did you tell me v = i then what will be i i will be v

48:20 /r v /r I said it was great so write it down two v bar r ect now see what to put in i1 The voltage will remain the same, son. The voltage will remain the same. keep watching the voltage will remain the same voltage Cut off the voltage, the final formula will remain what is left 1 times r equivalent equals to 1 ba r1 + 1/2 + 1 ba r3 did you understand it tell me quickly This happened or not, this happened if the matter comes then one tell me again that yes brother these two derivations We are clear, yes, tell me quickly, yes do yes and tell me yes dun dun dun dun dun very right very right so These are your series, these are your parallel So I have told you this about the derivation of equivalent.

49:05 I have got it done, now I will ask them questions Questions will give you more clarity What will you get from the question, son? You will get clarity, brother, I understood the resistance two friends that last one is numerical If you don't understand it then it's not a problem Numerical was a bit on the tough side It is not tough in the paper but it is ok come the communion having the equivalent Resistance One, you have to tell me which of these Which ones The net resistance of the circuit will be The equivalent resistance will be one tell me what would happen what would you feel son tell me quickly what kind of a girl is it It is obvious brother, we will check it Let's check both of these in parallel solve this 1/2 p 1/2 ok look at this one The basic method is that you will take the LCM then add i will tell you a method parallel

49:52 Let me tell you how to add, let's say r1 here here r2 is there so there is a formula Multiply both the resistances above the basic Do it and connect the two resistances below Two finish something he don't want to do lcm lcm something You don't want to do this, I will show you how to do it here I was here 2 what do you do first what do you do Do this, multiply 2 * 2 + 2 + 2 so this it will become 4/4 i.e. it will become simple There is no need to take LCM, hey what was the basic math ok r1 * r2 di ba r1 p r2 any number of parallel queries such that Just solve the complete LCM LCM Don't take it, okay, but when the three ones come So in these you will have to take LCM

50:38 The formula is valid only for two, now this solve this solve this 1/3 + 1/3 + 1/3 what will come this will come 3/3 whatever it is The recipe for each will be the same If it happens then it will bring a lot of forest Only a good one will come, look here now look, it is in two series, it is in two series and Then this is parallel so circuit solving this He speaks first of all to you series people Solve them, will you solve the series ones So what will be 2 + 4? 2 + 4 will be 6 See, son, solve the series questions. this will be six and solve these will it also happen, now these two are six, right? How did these two happen in parallel What did I do with six and six in parallel Told you to multiply and add 6 * 6 36

51:24 Divide by 6 + 6 12 then how much will it be This will come to your mind, if it is okay then it means So there is no one, let's go ahead and do 0.5 and 0.5 What do you think will be the answer to this? Guess what does 0.5 and 0.5 mean Look, 0.5 means what is 1/2 it is 1/2 1/2 what did I tell you multiply Do it and add it below then multiply If you do it then what will be 1/2 * 1/2 1/4 and When you add the below it will become 1/2 + 1/2 and then it will come 1/4 So that means it is not even known which ones came You got one, this is yours and one more Yours is coming, that means one and two types are coming In option C, C is correct, who chose C?

52:10 tell me the answer of the chart quickly Who from inside answered quickly tell me quickly tell me done ok very good very good Good, you understood this son, then we will do something else Now let's look at some higher level circuits We are studying circuit solving we will ask a lot of questions what is the Maximum resistance can be obtained using five register each off 1/5 Whenever the question is asked how many is also registered and you can get their maximum If you want to remove the resistance then you always you should add all these in a series then Add in series Addition in series Check Do it, how much will come 1/5 + 1/5 + 1/5 + 1/5 1 5 and this will become one to maximum

52:59 What will be the maximum amount your One D A will be? Now everybody's question is if this would have happened that the minimum of these five resistances what could have been the resistance then whenever If you get minimum marks in the question then you will get all the answers I am telling the resistance the trick whenever All resistances should be placed in parallel to the minimum how do you add two in parallel parallel If I preach the recipe to everyone then 1/5 please propose the recipe how will you do the recipe The result will be 5 + 5 + 5 + 5 + 5 this will be how much this will be 25 and In the end we also prepare the recipe hey i have calculated the value 1 / r Then at last we have the recipe for the equivalent Proc also has to be done in parallel parallel yes then what will you do 1/25 so if there was a minimum then it would be 1/25

53:47 If it were maximum then it would be one difference Whenever the series is maximum, whenever it is minimum yes parallel the question is very simple from here of course it's been asked many times some circuits do some circuit work Let's solve it so that you can have some fun Would it be fun, see what brother has said What did you say, look son, this is very good The question is important, it is important, look at it 2 ohm resistance A B C R connected in such a way that total resistance of the combination is 3 ohm is 3 ohm means i don't have it I have 2 ohm resistance, can't connect it and connect it in such a way that the net isn't it, the net net value should come out to be how much net how do I connect the value of 3

54:34 Use your mind brother, I need three nets If I add two and two in parallel If I give you two then add two and two in parallel Their net will come one and then I will give them through that If I add it to the series then I will get 1 p.o. It will be like this, you have to use your mind, see son First connect the two in parallel then these add one to both 2 2 You will just solve both of these in parallel what will come 1 p 2 3 understood understood very much very good very good such questions are asked come on brother make some resistance circuit Let's solve the circuit quickly Let's see how to solve this circuit Given Circuit Diagram Calculate the Total

55:19 Effective resistance and current through etch Look at the resistance now first of all there are three There is resistance in parallel, what should I tell you You have to find out the effective R net. How will you get the net, son, tell me R Net How will we take it out, son? How will we take it out? I know the formula, everybody knows it, right? right brother everyone gets 1/3 + 1/4 + Take 1/6 LCM, son, how much is the LCM it will come to 12, it is LCM, right? take the LCM I don't know it, don't do it like this friend LCM So you should know how to take it, friend, LCM right? Or else this is a problem, it will come to you How much will it cost you 7 + 2 9 9/1 and Don’t forget to prove the recipe at the end 12/9 Om is there right? Yes, whatever came on the net came

56:08 Went 12/9 we divide this by three If you can, it will come to you 4/3 okay 4/3 Om everyone has come let's go 4/3 Om Here comes the net resistance, now what? everyone is saying, everyone, look son, everyone Tell me how much current will flow through each branch remove this in one branch remove this in every branch You need to tell me how much current will flow i.e. how will you tell in this, in this and in this Think about it, what happens in parallel Is voltage here is the voltage so on this also How much will it cost? It will also have 6 volts. How much will be 6 volts, how much will be 6 on this Volt because voltage in parallel is same as it happens everybody has 6 volts on this also also there should be equal voltage on this also now can you

56:55 With the help of Oms Baba, every branch Can you extract the current? You can definitely extract it. how are you hey bro i know the voltage I know the resistance and I will calculate the current what is current v bar r so look brother v it is 6s voltage means the voltage is six And what is the tax resistance? So 6 6/6 = 1 The current flowing here is one Similarly, take it out here, son, here take it out 6/4 Take it out here similarly 6/3 I took out the current of these three and this is it I was asking to tell the current in each branch give it to someone who should it shine quickly tell me has one's shined, hasn't one come one's

57:40 2 and 1 will come in point 1.5 right, it will come in this, 1.5 more will come in this One very good circuit will come in this Some questions are coming for solving There are one more question I will ask you about the circuit of solving so that you get more clarity Son, let's go over circuit solving, see this Look at this circuit solving question here The basis of this circuit answer the following Questions Find the Total Resistance Between a and b you have to tell this point and this What is the net resistance between the points How to remove it, add everyone, it is not doing anything This is a series, this is a joint, oh friend, it's very simple This question has been asked in the board Look at the question, add up how much everyone will get 10 16 how much did it come 26 so 26 came okay find the resistance between b and c b and c

58:27 how to find the middle part of g parallel I have told you about the parallel trick, what is the trick If we multiply and add below then what is 64 / 16 This will come your 4 ohm very good So its net comes to 4 ohm, let's calculate it current drawn from the battery i.e. now you This is to tell how much current is flowing now Think about how to extract the current, son. how to calculate current how to calculate current tell me use your mind use your mind i will tell you how To find out the current, first of all we will take it out you need to know a formula v e a and aa evi ba aa i.e. I have net resistance

59:14 I want to see from here to here The resistance is 26 from here to here Resistance is now available in both series That means 26 P4 how much is it 30 so whatever R net came my son he came how much is 30 ok now what is the formula the formula is v ba aa That means 6 or 30 so this will be your 1/5 i.e. yours will come 0.2 Ampere Do not make mistake in 0.2 ampere unit Please write it down or else your marks will be deducted Your loss doesn't cost me anything, you sang I have heard that your loss is in this

1:00:04 Hey brother, if you do well in the exam, will you give me a gift? I will definitely give you a gift, tell me If you get rank one, what will you get? What should you do? Last time don't ask for what you want Jaden Dunn told me I would hit him a lot It comes very expensive tell me what do you want tell me brother tell me tell me Priya ji is saying that bhaiya please get me the bag which bag is written give what is this bull of sia give it back what is this dena balance sia thing Thing yes bag bag 10 pj 20 hajj bag I will get you Now my friend, if you do something dangerous

1:00:51 If something says something then I'll get scared Balance Aga Lane Si Are you a crazy girl? Will you give me a gift? don't do anything you are crazy four four pa run away from here and take it I love it or is this the way it is There must be a way and there is a wedding procession outside today somebody's going Should I dance now? Go ahead, move ahead go ahead go ahead Tell me brother let's go ahead and do this circuit

1:01:39 I understood the solving, I understood the circuit solving It's okay come on now let's move forward The supply that is made inside our homes Why is it always a parallel circuit What is so special about parallel circuits that it is a series What is so special about you that I don't have it If I don't have it then the parallel circuit would have been Isn't it son, there is something very special in it parallel First try to understand what is special in Voltage is same in parallel circuit So every appliance has this question It has been asked why parallel circuits are Why use used in home appliances are parallel circuits because one is the same Voltage goes to every appliance The same voltage goes to the refrigerator as well as the cooler everybody also has another thing one What happens when the resistance decreases

1:02:25 the resistance goes down and the next thing Independent function means look in parallel No, if one device gets damaged then two different The devices will not be damaged but if the series If one of them gets damaged then all the devices will are damaged simultaneously line by line or Parallel is good because if one device is bad Even if it happens, all the devices will work for you We'll keep doing it, okay, these are some advantages Now let's talk about the heating effect Electric current which was given to us by Baba Joule who gave it to us, who gave it to us son Jul Baba had given it, Jai Ho Jul Baba and Ask Jul Baba about the heating effect What did you give, then Zul Baba said that Whenever current is passing through a wire So heat will be produced in it and that heat will be directly proportional to the

1:03:11 Viewing the Square of the Current Directly Proportional will be the square of the current will be directly proportional to the resistance of the wire and directly How long will it be proportional to the time If you are making the current flow then The formula comes to be h = i s rt0 i s rt0 this is a very important formula brother Important formula and this is what it is called Joule heating law its statement is asked remember it is directly proportional to the Square of Current Directly Proportional to the resistance and directly proportional to the time okay son now Brother, can its derivation also be asked There are less chances but maybe if asked So I will make it very simple for you It is a derivation, son, what should I do with it you need to give you volt voltage

1:03:56 Everyone remembers the voltage formula Remember the voltage formula we studied? tha w ba who all remembers remembers one tell me what is heat, heat work is done what is heat what is energy The work is done, I studied it in ninth class, oh ho yes, brother we are in ninth class, we are chatting We used to do it brother, I said okay, it's okay So this is your work done right away and the formula for work done is v * q now Remember what the formula for charge was your current used to get charged into time then I I can write this v Now with the grace of Oms Baba I have read it v ,

1:04:43 ir-a i s r t tell me everyone got the same thing everyone got the same It came very well, so here also Oms baba and this is your final formula If it is heat then the work itself is heat, right? Ram is Shyam, Shyam is Ram, right? That's the thing, let's move on, let's do it what is your joule law of heating now its where do the questions come from There are lots of applications It is important what is the application brother Some of its very important applications is like the first application Electric fuses that are bulbs I am telling you what the fuses are There are meters in your homes There is no meter in the house, there is no electricity problem There is a fuse installed right there. Look at the work he does inside the board What happens sometimes is that the current does not come too high

1:05:30 When more current comes then it goes Your appliances could get damaged Fridge, TV, everything can get damaged or blown up then you have a fuse to protect it It feels like there is more current coming What happens is that the higher the current, the heat The more it will produce, the more heat because of this the fuse melts like this goes away from here and disappears breaks the circuit breaks the circuit Now the question is, brother, how can this happen? It melts, so I remember what it is made of keep this electrical fuse Does it have a very low melting point? I am telling you, you will remember the low melting point it has a low melting point okay and this Whose fuse wire is made then this is one It is made of alloy. I taught you about alloy just yesterday. yes there is an alloy called sn pb

1:06:16 i.e. it is an alloy of tin and lead what is its fuse property made of what is the melting point Melting point, remember two points, fuse One of them is the melting point of the fuse which what happens is less and the resistance it happens too much okay brother these two points The next thing you will remember is the bulb, hey brother There was no old-fashioned bulb which It used to give yellow colour light but now it gives white light

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