A) is attracted to the high voltage plate and stays there
B) hangs without moving
C) swings backward and forward hitting each plate in turn
D) is repelled to the earthed plate and stays there
Correct Answer: C
Solution :
When the other plate is connected to the high voltage generator, the negative charge induced on the ball cause attraction. When it strikes the +ve plate charge distribution again takes place. This causes repulsion. Hence, the ball swings backward and forward hitting each plate in turn.You need to login to perform this action.
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