Question
Question: A, B and C are identical, parallel, conducting plates arranged at equal separations. B lies between ...
A, B and C are identical, parallel, conducting plates arranged at equal separations. B lies between A and C. A and C are joined together and connected to one terminal of a cell. B is joined to the other terminal of the cell. A and C now have charge Q each. B has charge q –
A
Q = – 2q
B
q = – 2Q
C
q = – Q
D
q = – 3Q/2
Answer
q = – 2Q
Explanation
Solution
The A + B capacitor and the (C + B) capacitor are in parallel. B is negative plate for both.