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MGIMS WARDHA MGIMS WARDHA Solved Paper-2009

  • question_answer
    The mutual inductance of an induction coil is 5 H. In the primary coil, the current reduces from 5 A to zero in 10-3 s. What is the induced emf in the secondary coil?

    A)  2500V                                  

    B)  25000V     

    C)  2510V                                  

    D)  Zero         

    Correct Answer: B

    Solution :

                     \[e=-\frac{MdI}{dt}=-\frac{5\times (-5)}{{{10}^{-3}}}=25000V\]


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