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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    In a spherical condenser radius of the outer sphere is \[R\]. The different in the radii of outer and inner sphere in\[x\]. Its capacity is proportional to

    A)                    \[\frac{xR}{(R-x)}\]

    B)                                      \[\frac{x(R-x)}{r}\]

    C)               \[\frac{R(R-x)}{x}\]        

    D)   \[\frac{R}{x}\]

    Correct Answer: C

    Solution :

               \[C\propto \frac{ab}{b-a};\] a = R ? x, b = R so, \[C\propto \frac{R(R-x)}{x}\]


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