RAJASTHAN PMT Rajasthan - PMT Solved Paper-2010

  • question_answer
    If the current 3 A flowing in the primary coil ii made zero in 0.1 s. The emf induced in the secondary coil is 1.5 V. The mutual inductance between the coils is

    A)  0.05 H                                  

    B)  1.05 H

    C)  0.1 H                    

    D)         0.2 H

    Correct Answer: A

    Solution :

    \[e=M\frac{di}{dt}\Rightarrow 1.5=M\times \frac{3}{0.1}\] \[\Rightarrow \]               \[M=0.05\,\,H\]


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