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

  • question_answer
    The reactance of a coil when used in the domestic ac power supply (220 volt, 50 cycles) is 100 ohm. The self inductance of the coil is nearly                                                   [MP PMT 1996]

    A)            3.2 henry                               

    B)            0.32 henry

    C)            2.2 henry                               

    D)            0.22 henry

    Correct Answer: B

    Solution :

                       Reactance \[=2\pi \nu L\,\Rightarrow \,100\,\Omega =2\times \frac{22}{7}\times 50\times L\]            \[\therefore \,\,\,L=0.32\,\,henry\]


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