I need some explanations on the green underlined sentences. 1) \"Must continue t
ID: 1375480 • Letter: I
Question
I need some explanations on the green underlined sentences.
1) "Must continue to have zero net charge..." What if the C2 had +2Q on the left plate and -Q its right plate? The net charge between C1 and C2 obviously wouldn't be zero. So how does one go to deal with that situation? Also what is preventing the negative charges from staying on the plate of C2? Sure you might say "well that's because like-charges repel!", why can't it stay and the capacitor have a negative net charge?
2) Yes we see the picture, but it doesn't explain WHY the potential difference is different. If we use hydraulic analogy, how could the membrane be at different pressure if they are in the same pipe? The pipe should have the same pressure throughout.
Explanation / Answer
1) You probably know how to solve simple electrostatics situations where you have a bunch of parallel plates (plates, not capacitors), with different charges. What happens here is that the excess charge (+Q) distributes on the outer surface of both plates. You then get