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 moving coil galvanometer has N number of turns in a coil of effective area A, it carries a current I. The magnetic field B is radial. The torque acting on the coil is      [MP PMT 1994]

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

    B)            \[NAB{{I}^{2}}\]

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

    D)            NABI

    Correct Answer: D

    Solution :

               \[\tau =MB\sin \theta \] Þ \[{{\tau }_{\max }}=NiAB\],     (\[\theta =90{}^\circ \])


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