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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Electric Field and Potential

  • question_answer
    A spherical conductor of radius 2m is charged to a potential of 120 V. It is now placed inside another hollow spherical conductor of radius 6m. Calculate the potential to which the bigger sphere would be raised                         [KCET 2001]

    A)            20 V                                         

    B)            60 V

    C)            80 V                                         

    D)            40 V

    Correct Answer: D

    Solution :

                 If charge acquired by the smaller sphere is Q then it?s potential \[120=\frac{kQ}{2}\]                            ..... (i) Also potential of the outer sphere \[V=\frac{kQ}{6}\]                                 .....(ii) From equation (i) and (ii) V = 40 volt


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