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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Capacitance

  • question_answer
    The capacitance of a metallic sphere will be\[1\mu F\], if its radius is nearly                                 [MP PMT 1992; MH CET (Med.) 2001; UPSEAT 1999]

    A)                    9 \[km\]

    B)                                      10\[m\]

    C)                    1.11 \[m\]

    D)                                      1.11 \[cm\]

    Correct Answer: A

    Solution :

               \[4\pi {{\varepsilon }_{0}}r=1\times {{10}^{-6}}\] Þ \[r={{10}^{-6}}\times 9\times {{10}^{9}}=9\,km\]


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