RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    A charger\[q\] is placed at the centre of circle of radius r. Then work done by charge Q in completing one round is:

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

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

    C)                         zero                     

    D)                        \[\frac{2q}{2r}\]

    Correct Answer: C

    Solution :

    To move on a circular path, work done is zero because displacement is zero.


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