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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Self Evaluation Test - Electric Chages and Fields

  • question_answer
    The metal knob of a gold leaf electroscope is touched with a positively charged rod. When it is taken away the leaves stay separated. Now the metal knob is touched by negatively charged rod. The separation between the leaves

    A) increases             

    B) decreases

    C) remains same

    D) first increases then decreases.

    Correct Answer: B

    Solution :

    [b] On touching the metal knob with a positively charged rod some electrons from the gold leaves get transferred to the rod making gold separated. When a negatively charged rod charge flows to the gold leaves lessening the positive charge there and the separation between the leaves decreases.


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