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JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Static EMI

  • question_answer
    In a transformer, the coefficient of mutual inductance between the primary and the secondary coil is 0.2 henry. When the current changes by 5 ampere/second in the primary, the induced e.m.f. in the secondary will be [MP PMT 1989]

    A)             5 V

    B)            1 V

    C)             25 V                                        

    D)            10 V

    Correct Answer: B

    Solution :

               \[e=M\frac{di}{dt}=0.2\times 5=1\ V\]


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