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12th Class Physics Electrostatics & Capacitance Question Bank Case Based (MCQs) - Electrostatic Potential and Capacitance

  • question_answer
    The change in electric potential energy of the proton for displacement from A to B is:

    A) \[1.6\times {{10}^{11}}J\]                   

    B) \[0.5\times {{10}^{23}}J\]

    C) \[-1.6\times {{10}^{-11}}J\]     

    D) \[3.2\times {{10}^{22}}J\]

    Correct Answer: C

    Solution :

    (c) \[-1.6\times {{10}^{-11}}J\] As \[\Delta U=q\,\Delta V\] \[=-\left( 4\times {{10}^{8}} \right)\times 0.25=-{{10}^{8}}V\]


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