Two concentric conducting shells A and B are of radii R and `2R`. A charge `+
Channel: Doubtnut
Date: 26/07/2020

Two concentric conducting shells A and B are of radii R and `2R`. A charge `+ q` is placed at the centre of the shells. Shell B is earthed and a charge q is given to shell A. Find the charge on outer surface of A and B.