12th Class Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Case Based (MCQs) - Moving Charges and Magnetism

  • question_answer
    In a moving coil galvanometer, having a coil of N-turns of area A and carrying current I is placed in a radial field of strength B. Th torque acting on the coil is

    A) \[N{{A}^{2}}{{B}^{2}}I\]

    B) \[NAB{{I}^{2}}\]

    C) \[{{N}^{2}}ABI\]

    D) NABI

    Correct Answer: D

    Solution :

    The deflecting torque acting on the coil. \[{{t}_{deflection}}=NIAB\]


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