Viva Questions Find Resistance Of wire By using Meter Bridge || 12th Physics Practical #practical

So even when starting, you'll press the tap on your own roots. And then you will push it forward, pressing it as well. There could be a lot of errors in your reading. Hello friends, how are you all? So, kids, let me tell you I've already started your Vaiva Series Star. Because look, I've already given the practicals to the children. Whether it's physics, biology, or chemistry So let me tell everyone where your child is staying What does it do on the principal's west bridge? It works, that's fine. At the balance point You'll know, you'll also see a large wooden board, thin and about one centimeter thick. It keeps getting tangled, and from that, a song has been made. This is the moment to start singing. Come on. Hania wonders what they do to find out her resistance. Do we know the unknown resistance? I know his resistance. It is not the case. We are moving to question number 3 above. Question number 3 has very easy questions. I have been asked about the jockey. What is the function of the jockey? What are the functions of a jockey? To a jockey is the movable Dhyun Suna The jockey is the movable part of the context. used to find out the null point of the meter bridge wire We use it to find null points. Where is the null point? We want to make Jocky a happy person in the two days of holiday. So you need to show that your knack for reading is something we do with Jocky. Let's see how Jalal advances like the next contestant. Here is our next song, which I'd like to perform. What is a water tap point? Where your meter is located, the deflection is thought to be. Your bridge balance is affected because Y. Jockey doesn't want to talk about the matter. If you talk to Joki on Wi-Fi, her destinations and length will change. The problem is exactly this: if you press the balance with a gap, either you press it forward or carry it forward. Then I'll be stuck in the lawyer's office, and all those orders could come in. Next few ones are what I can't do with you, my dear. What is that? Look. The thing you're referring to is your own noise resistance box. You know how much resistance to take, what to do. Go see for yourself, new ones are coming. So we keep checking it repeatedly. Why do they cry? So that we don't have to take the Thai of Era verbosity If everyone's registration is done, then I won't take any error So, what do we do on the donor side? What is the formula to find the resistance of a galvanometer wire or a wire? So we have a formula: r is equal to s into l upon 100 minus l The balance length, l, is the length at which the galvanometer shows zero deflection, indicating that the potential difference across the wire segment is balanced by the EMF of the cell being measured. You keep using this formula over and over; next time, check how resistivity is. What is the formula of Rho? Tell me the formula of Rho. Yes, I'm writing it down, look. rho is equal to r times resistance upon a upon l The area is yours, and the length sometimes might also be yours. What could the vaccine be? Your wire length and wire radius r are yours. radius of the wire, okay, you'll know that, after that let's see what is the Unit of resistance? Oh, everyone knows this is ohm meter, right? What is the unit of resistivity? Ohm meter, right? Just check it like this It could also be possible, it could also be written like this, you can write the next constant, mung beans are being processed. What is the Difference between resistance and resistivity — the resistance you have, that's not it It depends on the length and area of your material, but what about yours? Resistivity depends only on the material, not on its dimensions. If the child seems good to you in this series, please like the video. If you're watching from this one, please like it. Do you know what the problem is? If you get this experiment, the viva will be asked right from this. You don't need to read everything I'm sending you in the Viva Series Start, but if you get these practicals, The meter for finding resistance and resistivity from a single experiment is the same. They will ask you, and that's exactly what will get you the marks—however many questions I'm making. You should give me your support; I'm doing my best, so you should give me support, okay? Alright, what is the use of a resistance box? The use of a resistance box is to provide known, precise values of electrical resistance for use in experiments and circuits. We place a non-resistance private resistance box to balance the bridge. Exactly, what does it do? It's the next one. What is the function of the galvanometer? Is it detecting the presence and direction of the current used to locate the null point? Exactly, when we tap the galvanometer, we get a deflection, and when the null point is reached, we know It goes to zero deflection here, correct? No current flows through the circuit, correct? So, find that. To measure current, what do we use instead of a galvanometer? The next question is why? You must close it only when you need to take a reading, because the child Current flow in the circuit will generate heat, so wherever resistivity can be increased, it's correct. to avoid the heating of the bridge wire, which can alter the resistance at the balanced point Now, next is: What is the least count of the screw gauge? Do you also include the screw gauge in this? If you're using it, it's very easy to find the list count; I'll tell you how to get the list count of the list. count is equal to pitch pitch divided by number of divisions What is the number of divisions on the scale and the pitch on the scale? You must know this. You have some kind of screw gauge, right? So, whatever number here It is called the pitch, and the number of divisions on the circular scale, sorry, on the circular scale. The circular scale has a total of one hundred divisions. This is the pitch. You will get the list count of the screw gauge when you divide by the circular scale. In the list count, the smallest unit is count, right? Okay, got it. Why is this question important? Why isn't copper used for the bridge wire, I mean the wire we People connect using a bridge; why not copper in a meter bridge? We use it because copper has low resistivity and high temperature tolerance. coefficient making it unstable for precise resistance measurement, sorry It's wrong, precise, copper's resistivity isn't that high, not even close. It's high, sorry, it's low. What is its resistivity left? Very much left. The value is low, that's why we cannot determine its precise value in this experiment. We cannot use copper, so it's yours. Please like the video from the last question, this is the last one Why I know because it's very important that's Why did I write it at the end and ask you? S and R in the meter bridge are located at the same place in the meter bridge. Standard Resistance Non Resistance taken from this resistance box, you know its value, I mean, you're aware of it You take out 100, you take out 150, you take out 300 Here, they're taking out 600, but the one that remains is the child. to be determined, its wire resistance is there, and you need to It often happens that we need to determine s and r. Questions were asked to the child, please if you have seen this video Feeling good about it, tell him this, about the vivas viridis If you liked it, please support me, and I'll be back with the next video. See you in the next video.