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

  • question_answer
    A hollow conducting sphere of radius \[R\] has a charge \[(+Q)\] on its surface. What is the electric potential within the sphere at a distance \[r=\frac{R}{3}\] from its centre              [MP PMT 2001; UPSEAT 2001; MP PET 2001, 02; Orissa JEE 2005]

    A)            Zero                                         

    B)            \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{r}\]

    C)            \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{R}\]

    D)                                      \[\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{Q}{{{r}^{2}}}\]

    Correct Answer: C

    Solution :

                 Inside a conducting body, potential is same everywhere and equals to the potential of it?s surface


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