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

  • question_answer
    The current in a coil changes from 4 ampere to zero in 0.1 s. If the average e.m.f. induced is 100 volt, what is the self inductance of the coil                                                   [MNR 1998]

    A)            \[2.5\ H\]                               

    B)            \[25\,H\]

    C)            \[400\ H\]                              

    D)            \[40\ H\]

    Correct Answer: A

    Solution :

               \[e=L\frac{di}{dt}\Rightarrow 100=L\times \frac{4}{0.1}\Rightarrow L=2.5\ H\]


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