JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Biot-savart's Law and Amperes Law

  • question_answer
    A long copper tube of inner radius R carries a current i. The magnetic field B inside the tube is     [MP PMT 1995]

    A)            \[\frac{{{\mu }_{0}}i}{2\pi R}\]                                         

    B)            \[\frac{{{\mu }_{0}}i}{4\pi R}\]

    C)            \[\frac{{{\mu }_{0}}i}{2R}\]   

    D)            Zero

    Correct Answer: D

    Solution :

               Magnetic field inside the hollow conductor (tube) is zero.


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