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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    Two spherical conductors each of capacity \[C\] are charged to potentials \[V\] and \[-V\]. These are then connected by means of a fine wire. The loss of energy will be [MP PMT 1997]

    A)                    Zero

    B)                                      \[\frac{1}{2}C{{V}^{2}}\]

    C)                    \[C{{V}^{2}}\]              

    D)            \[2C{{V}^{2}}\]

    Correct Answer: C

    Solution :

               \[\Delta V=\frac{1}{2}\frac{C\times C}{(C+C)}\,|V-(-V){{|}^{2}}=C{{V}^{2}}\]


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