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JEE Main & Advanced Physics Magnetism Question Bank Self Evaluation Test - Magnetism and Matter

  • question_answer
    The radius of the coil of a tangent galvanometer is 16cm. How many turns of the wire should be used if a current of 40m A is to produced at deflection of \[45{}^\circ \]. given, horizontal component of earth's field is \[0.36\times {{10}^{-4}}T\].

    A) 458

    B) 229  

    C) 200

    D) 115

    Correct Answer: B

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