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VMMC VMMC Medical Solved Paper-2005

  • question_answer
    The electric potential at the surface of anatomic nucleus (Z = 50) of radius \[9.0\times {{10}^{-13}}\,cm\] is:

    A) \[9\times {{10}^{5}}\] volt           

    B)        \[8\times {{10}^{6}}\]volt            

    C)        80 volt                  

    D)        9 volt

    Correct Answer: B

    Solution :

    Electric potential at the surface of an atomic nucleus is \[V=\frac{1}{4\pi {{\varepsilon }_{0}}}.\frac{Ze}{r}\] \[=\frac{9\times {{10}^{9}}\times 50\times 1.6\times {{10}^{-19}}}{9\times {{10}^{-15}}}\] \[=8\times {{10}^{6}}\,\text{volt}\]


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