A capacitor of a set of two parallel plates of area A separa

A capacitor of a set of two parallel plates of area A separated by a This capacitor is connected to a battery that maintains a constant potential difference the plates. If the separation between the plates is doubled, the energy stored in the capacitor will be

Solution

electrical energy stored E = (CV^2)/2 = AEoV^2/2d

energy stored is inversely proportional to separation between plates d.

=> E2/E1 = d1/d2

=> if d2 = 2*d1

=> E2 = E1/2 .......energy stored will be halved.