Question

A positively charged rod is brought near an uncharged conductor. If the rod is suddenly withdrawn, the charge left on the conductor will be :

• A. positive
• B. negative
• C. zero
• D. cannot say

Answer 1

The correct option is C zero

Positively charged rod induces negative charge on the side of the sphere closer to the rod and an equal positive charge on the side away from the rod. When the rod is withdrawn, the negative charges move to neutralise the equal positive charge. The charge left is zero.