JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Force and Torque on a Current Carrying Conductor

  • question_answer
    A circular coil of 20 turns and radius 10 cm is placed in uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in coil is 5 A, then the torque acting on the coil will be                                         [J & K CET 2005]

    A)            31.4 Nm                                 

    B)            3.14 Nm

    C)            0.314 Nm                               

    D)            Zero

    Correct Answer: D

    Solution :

               Since \[\theta =0{}^\circ \]  so \[\tau =0\] \[(\because \,\tau =NiAB\sin \theta )\]


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