Question

A hollow conductor is negatively charged to - 4 uC. A small metal ball with - 4 uC is lowered by a silk thread through a small opening in the top of the conductor and allowed to touch its inner surface. After the ball is removed, it will have:

   (a) + 4 uC.     (b) - 8 uC.      (c) – 4 uC.    (d) 0. (e) a charge whose sign depends on what part of the inner surface it touched.

Answer 1

Answer)

Option d) zero

Here, entire charge on a hollow conductor remains on the outer surface and there is no charge on the inner surface.

So, the metal ball stays uncharged.

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Good luck!:)