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JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Self Evaluation Test - Electromagnetic Induction

  • question_answer
    A rectangular coil of 20 turns and area of cross- section 25 sq. cm has a resistance of\[100\,\Omega \]. If a magnetic field which is perpendicular to the plane of coil changes at a rate of 1000 tesla per second, the current in the coil is

    A) 1 A  

    B) 50 A

    C) 0.5 A

    D) 5 A

    Correct Answer: C

    Solution :

    [c] \[i=\frac{e}{R}=\frac{\frac{nAdB}{dt}}{R}\] \[=\frac{20\times (25\times {{10}^{-4}})\times 1000}{100}=0.5A\]


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