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

  • question_answer
    A varying current at the rate of 3 A/s in a coil generates an e.m.f. of 8 mV in a nearby coil. The mutual inductance of the two coils is                                                            [Pb. PMT 2000]

    A)            2.66 mH                                  

    B)            \[2.66\times {{10}^{-3}}\,mH\]

    C)            2.66 H                                      

    D)            0.266 H

    Correct Answer: A

    Solution :

               \[|e|\,=M\frac{di}{dt}\Rightarrow 8\times {{10}^{-3}}=M\times 3\Rightarrow {{A}_{1}}=2.66mH\]


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