A point charge Q is placed at the centre of an uncharged spherical shell of inner radius
Channel: Doubtnut
Date: 23/08/2020

A point charge Q is placed at the centre of an uncharged spherical shell of inner radius a and outer radius b. There is a small tunnel in the body of the shell. Calculate the work done to transfer the charge through the tunnel to infinity.  [Hint: Remove the charge bit by bit and calculate the total work done.]