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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 42

  • question_answer
    Two long parallel wires are at a distance 2d apart. They carry steady equal currents flowing out of the plane of the paper as shown. The variation of the magnetic field B along the line XX' is given by

    A)

    B)

    C)

    D)

    Correct Answer: A

    Solution :

    The magnetic field varies inversely with the distance for a long conductor. That is, \[B\propto \frac{1}{d}\] so, graph is the correct one.


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