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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 41

  • question_answer
    A metallic ring (radius R) of negligible resistance has a resistance r connected across its diameter as shown in the figure. It is moving with velocity \[{{v}_{0}}\]in a constant magnetic field B acting perpendicular to the plane of paper in inward direction. The current in the resistance is

    A) \[\frac{2BR{{v}_{0}}}{r}\]

    B)                    \[\frac{BR{{v}_{0}}}{r}\]

    C) \[\frac{BR{{v}_{0}}}{2r}\]       

    D)        \[0\]

    Correct Answer: D

    Solution :

    [d] Flux is not changing through the loop hence no induced emf will be generated and zero current will flow through resistance.


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