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

  • question_answer
    In an hydrogen atom, the electron revolves around the nucleus in an orbit of radius \[0.53\times {{10}^{-10}}m\]. Then the electrical potential produced by the nucleus at the position of the electron is                                              [Pb. PMT 2001]

    A)            ? 13.6 V

    B)                                      ? 27.2 V

    C)            27.2 V                                      

    D)            13.6 V

    Correct Answer: C

    Solution :

                 \[V=9\times {{10}^{9}}\times \frac{Q}{r}=9\times {{10}^{9}}\times \frac{(+1.6\times {{10}^{-19}})}{0.53\times {{10}^{-10}}}\]= 27.2V


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