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प्रश्न
Describe a pith ball electroscope. how can you use it to test whether a body is charged or uncharged?
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उत्तर
PITH BALL ELECTROSCOPE
It consists of a small pith ball suspended by a dry silk thread from an insulating stand.
TO TEST A BODY IS CHARGED OR NOT:
Bring the body to be tested near the pith ball (without touching it). If the pith ball moves towards the body, the body is charged. But if the body does not move, the body is uncharged.
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