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

  • question_answer
     Two circuits have coefficient of mutual induction of 0.09 henry. Average e.m.f. induced in the secondary by a change of current from 0 to 20 ampere in 0.006 second in the primary will be                                       [MP PET 1992]

    A)            120 V                                       

    B)            80 V

    C)            200 V                                       

    D)            300 V

    Correct Answer: D

    Solution :

               \[e=M\frac{di}{dt}=0.09\times \frac{20}{0.006}=300\ V\]


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