Question

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 If the rod is then suddenly withdrawn, the charge left on the conductor will be :

• A. positive
• B. negative
• C. zero
• D. data insufficient

Answer 1

The correct option is C zero

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 When the rod is withdrawn, the positive charges move to neutralise the equal negative charge.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