Question

A radio capacitor of variable capacitance is made of n parallel plates each of area A and separated from each other by a distanced. The alternate plates are connected together. The capacitance of the combination is.

Answer 1

Let us assume that the potential of all plates connected from first plate is V and that connected to the second plate is 0.

So, there are n−1 parallel plate capacitors between potentials V and 0.

∴ C

net

=(n−1)

d

Aϵ

0

, where A is the area of each plate and d is the separation between each plate.

Answer 2

Answer:

here is your answer....