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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    Eight small drops, each of radius \[r\] and having same charge \[q\]are combined to form a big drop. The ratio between the potentials of the bigger drop and the smaller drop is [CPMT 1983, 89; MP PMT 1989, 94]

    A)                    8 : 1

    B)                                      4 : 1

    C)                    2 : 1                                  

    D)            1 : 8

    Correct Answer: B

    Solution :

               By using \[{{V}_{big}}={{n}^{2/3}}{{v}_{small}}\] Þ \[\frac{{{V}_{Big}}}{{{v}_{small}}}={{(8)}^{2/3}}=\frac{4}{1}\]


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