A conducting sphere `A` of radius `a` ,with charge `Q` , is placed concentrically inside
Channel: Doubtnut
Date: 2020-08-23

A conducting sphere `A` of radius `a` ,with charge `Q` , is placed concentrically inside a conducting shell `B` of radius `b` . `B` is earthed. `C` is the common centre of the `A` and `B`