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12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank MCQ - Alternating Currents

  • question_answer
    An ideal inductor is in turn put across 220V, 50 Hz and 220 V. 100 Hz supplies. The current flowing through it in the two cases will be:

    A) equal                            

    B) different

    C) zero                              

    D) infinite

    Correct Answer: B

    Solution :

    (b) different The current in the inductor coil is given by             \[l=\frac{V}{{{X}_{L}}}=\frac{V}{2\pi vL}\] Since, frequency v in the two cases is different, hence the current in two cases will be different.


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