12th Class Physics Magnetism 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 l is placed in a radial field of strength B.

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

    B)             \[NAB{{l}^{2}}\]

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

    D) \[NABl\]

    Correct Answer: D

    Solution :

    (d) \[NABl\] The deflecting torque acting on the coil.             \[{{\tau }_{deflection}}=NlAB\]


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