JEE Main & Advanced Sample Paper JEE Main Sample Paper-40

  • question_answer
    A charge +q is taken around a long charged cylinder carrying a charge of \[\lambda \]per unit length. The total work done is

    A) zero                 

    B) \[4\pi \lambda {{\varepsilon }_{0}}\]

    C) \[\lambda /{{\varepsilon }_{0}}\]                  

    D) \[\lambda /4\pi {{\varepsilon }_{0}}\]

    Correct Answer: A

    Solution :

    [a] The work done in moving a charge along an equipotential surface is zero.


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