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MGIMS WARDHA MGIMS WARDHA Solved Paper-2012

  • question_answer
    An electron is moving with velocity v in the direction of magnetic field B, then force acting on electron is

    A)  zero                                     

    B)  \[e(v\times B)\]

    C)  \[e(B\times v)\]             

    D)  200 J

    Correct Answer: A

    Solution :

                    Force on a moving charge \[F=qvBsin\theta \] \[\therefore \]  \[\theta =0,\]then \[\sin \theta =0\] \[\therefore \]  \[F=0\]


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