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12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Case Based (MCQs) - Alternating Currents

  • question_answer
    The average power transferred per cycle to inductor is:

    A) 25 W                            

    B) 17.42 W

    C) 16.52 W                       

    D) zero

    Correct Answer: D

    Solution :

    (d) zero                         \[{{P}_{L}}={{E}_{v}}{{l}_{v}}\,\cos \,\phi \] In an inductor, phase difference, \[\phi =90{}^\circ \]             \[{{P}_{L}}={{E}_{v}}{{l}_{v}}\cos 90{}^\circ =zero\]


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