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

  • question_answer
    The current through choke coil increases form zero to 6A in 0.3 seconds and an induced e.m.f. of 30 V is produced. The inductance of the coil of choke is                       [MP PMT 2004]

    A)            5 H

    B)            2.5 H

    C)            1.5 H                                        

    D)            2 H 

    Correct Answer: C

    Solution :

               \[|e|\,=L\frac{di}{dt}\Rightarrow 30=L\times \frac{(6-0)}{0.3}\Rightarrow L=1.5\ H\]


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