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JEE Main & Advanced Physics Alternating Current / प्रत्यावर्ती धारा Question Bank ac Circuits

  • question_answer
    A 120 volt ac source is connected across a pure inductor of inductance 0.70 henry. If the frequency of the source is 60 Hz, the current passing through the inductor is [MP PET 1994]

    A)            4.55 amps                             

    B)            0.355 amps

    C)            0.455 amps                           

    D)            3.55 amps

    Correct Answer: C

    Solution :

                       \[Z={{X}_{L}}=2\pi \times 60\times 0.7\]            \[\therefore \,\,i=\frac{120}{Z}=\frac{120}{2\pi \times 60\times 0.7}=0.455\,\,ampere\]


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