Welcome to caution number twenty three point three six. Chapter twenty three Electric Potential. So we have given that there are two. Pause it Lee charge Parallel plates to these are supposedly charge para bread. So one has Q and this has minus Q charge. We're saying that this has Sigma charge, and this has minus sigma charge because they're very long plaits. So surface densities, eh? Better quantity to discuss rather than cute self. So this is surface identity and were given that the distance between those two plates is the Is it? So we need to find out the electric field in between them and the potential difference between those two blades. And there is one more question. Party. We can discuss it later, so we have this formula. So this is the electric field due to one plate, two to one click. Having seen much I density and and cap is the direction towards the Norman off the plate. So let's say we have seen much identity off any bread, so electric field direction his outward If. Q. If sigma is Percy or curious posted, if save my is negative, that means that's why this issue my negative. So they have to create is into the wait. So let me intro one more electric three lines so that every point elective feel is coming to the and for splicing my charge collective three lines out to the normal. So these are normal. Tow this plane off the panel plate. So we have electric field due to stick this in my charge. It works this way. And same similarly we have electric field. You two minus sigma Charge again. This way. So we have e plus Sigma Better plus even minus Sigma Tau which is equals to erect a total. This is due to the less charge plate and this is due to the minus charge. So this becomes Sigma over to Absalon. Direction is let's see, we have high camp again, using for minus sigma We have plastic model or to absent, Not I can't, which becomes attractive children we can forget about. I can't because they say the direction to find we can take jet cap cake or anything I actually want to take. So we have a total equals two e. T. We have defined here. Which is a question, Seema, what to signal with absolute matures This result. So we will use this formula to find an electric field. So Sigma is given here, which is forty seven Nano column per meter square. Oh, it close to forty seven to ten days. We're minus nine column because, nah, noise tradition when it's not so we have but a which is equal to its, you know, absolutely so. Forty seven to ten days, so minus nine column. Well, we're absolutely, you know the way. So one by four by Absalon is it calls to nine into ten, twelve, nine. So this gives us absolute value because too one over four by into nine into tennis supporting this value here and using the calculator so elected field comes out to be five three, one Jill Newton were cooler. So this is the electric field which is in between them. Remember that this is independent of the distant, so whatever they have to feel, as at this point is also had very far away from the plate also. So this is independent the distance now coming back to the B. But so potential defence is it calls to the They could feel times the distance between them So this is the formula for potential potential difference between those two plates due to paella plates. So we have be part because two really close to E. T. D. Is your fight too. You won Joe times you d the zero distance which is zero point zero two two meter. We have to use the science here. So putting here zero point zero two using your complete that you can find out. So this is a closed too One one seven words That should be easy. Now going to the seat back Secret is based on the argument. So see, buddies what happens to the manager, the field and to the potential difference if surface star densities the same but they is double. So if these double is independent of distance so it remains the same so for sea. But seeing my eyes same d becomes Jody now electric field. I do too. Electric feen due to battler plates is independent off distance so hee the demands sing. So is because to get the same value five t one Julian five three one zero. But now, looking at the attention we have e t d. So rico's to e t D. So your distance has doubled now. So the potential difference we will go from three. Two Trevino Rays goes to e to to Dean. So which means new prime, the new or the new is itcause two to eighty deep physicals to to be, which is a constant, too into one, one, seven more. Two one one seven. So this is a cause to do three four. So the credential attention has doubled. So that's your answer for this question. I hope you understand. So thank you.