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JEE Main & Advanced Physics Magnetism JEE PYQ-Magnetism

  • question_answer
    A solid metal cube of edge length 2 cm is moving in a positive y-direction at a constant speed of 6 m/s. There it’, a uniform magnetic field of 0.1 T in the positive z- direction. The potential difference between the two faces of the cube perpendicular to the x-axis, is - [JEE Main 10-Jan-2019 Morning]

    A) 2 mV

    B) 12 mV

    C) 6 mV

    D) 1 mV

    Correct Answer: B

    Solution :

    [b]
    Due to magnetic force on electron charge separation get develop as shown in figure
    At steady state
    Potential difference between two faces


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