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

  • question_answer
    The inductance of a coil is \[60\,\mu H\]. A current in this coil increases from 1.0 A to 1.5 A in 0.1 second. The magnitude of the induced e.m.f. is                                          [MP PMT 1995]

    A)            \[60\times {{10}^{-6}}\,V\]    

    B)            \[300\times {{10}^{-4}}\,V\]

    C)            \[30\times {{10}^{-4}}\,V\]    

    D)            \[3\times {{10}^{-4}}\,V\]

    Correct Answer: D

    Solution :

               \[e=L\frac{di}{dt}=60\times {{10}^{-6}}.\frac{(1.5-1.0)}{0.1}=3\times {{10}^{-4}}volt\]


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