Two students discuss what would happen if, instead of being uncharged, (he condu

Question

Two students discuss what would happen if, instead of being uncharged, (he conducting ball in pair B had a small net charge. (Assume the ball and the tape are both positively charged.) "Since the ball is a conductor, the excess charge will be evenly distributed on the surface. Since the ball and the tape have like charge, they will repel." "The tape will still repel the positive charge on the ball and attract the negative charge on the ball. If the excess positive charge is not too much they may still attract each other." "That can't be true. If the ball has a net positive charge, then there is no negative charge on the ball." Do you agree with cither student? Explain your reasoning.

Explanation / Answer

I agree with the student 1. Yes when we consider the net positive charge then there will not be any negative charge. For conductor the charge will be always distributed on its surface which is called Shielding effect.

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