Question

A ball with charge $50 \,e$ is placed at the centre of a hollow spherical shell which has a net charge of $- 50\,e$ . What is the charge on the shells outer surface?

• A. -50e
• B. Zero
• C. -100e
• D. +100e

Answer 1

Answer: (D)

+100e

Answer 2

The net charge on the outer surface is $-(50\,e-50\,e)=100\,e$