`A,B,C` are identical, parallel conducting plates arranged at equal separation `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,B,C and D are identical, parallel , conducting plates arranged as shown, with equal separations between consecuting plates. A and D are connected to a cel. If B is now connected to C , which of the following will occur?

Three identical parallel conducting plates A, B and C are placed as shown. Switches S_(1) and S_(2) are opened and connect A and C to earth when closed. +Q charge is given to B.

Three identical parallel conducting plates A, B and C are placed as shown. Switches S_1 and S_2 are open, and can connect A and C to earth when closed. +Q charges is given to B.

Four identical conducting plates are placed parallel to each other at equal separations as shown below: Plates A and D are fixed while B and C are connected with the help of a conducting spring of spring constant k. Initially, the spring is in relaxed position and B and C are at rest, now the spring is compressed slightly by displacing B and C and then plates B and C are released to perform SHM. Now the capacitance of the system across PQ [ Mass of each plate is m]

Three identical metallic plates are kept parallel to one another at separations a and b. The outer plates are connected to the ground and the middle plate is given charge Q. Then, the charge on the right side of middle plate is