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

  • question_answer
    If a current of 3.0 amperes flowing in the primary coil is reduced to zero in 0.001 second, then the induced e.m.f. in the secondary coil is 15000 volts. The mutual inductance between the two coils is                                      [MP PMT 1989, 91]

    A)            0.5 henry                               

    B)            5 henry

    C)            1.5 henry                               

    D)            10 henry

    Correct Answer: B

    Solution :

               \[e=M\frac{di}{dt}\Rightarrow M=\frac{15000}{3}\times 0.001=5\ H\]


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