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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    1000 small water drops each of radius r and charge \[q\]coalesce together to form one spherical drop. The potential of the big drop is larger than that of the smaller drop by a factor of          [CPMT 1991, 97; NCERT 1984; MP PMT 1996; MP PET 2002]

    A)                    1000

    B)                                      100

    C)                    10                                      

    D)            1

    Correct Answer: B

    Solution :

               \[{{V}_{Big}}={{n}^{2/3}}{{v}_{small}}={{(1000)}^{2/3}}{{v}_{small}}=100\,{{v}_{small}}\]


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