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J & K CET Medical J & K - CET Medical Solved Paper-2015

  • question_answer
    Consider a region of uniform magnetic field directed along positive X-axis. Now a positive test charge Q, located at origin 0 (0, 0) inside the field, is released from rest position. The particle will

    A)  remain stationary at origin\[O\]

    B)  move along positive X-axis

    C)  move along negative X-axis

    D)  undergo a circular motion in the\[X-Y\]plane

    Correct Answer: A

    Solution :

     The particle is released from rest, i.e.\[v=0\]. Force on the particle due to magnetic field \[F=qvB=q(0)B=0\] Therefore, particle remains stationary at the origin.


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