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 volts, 50 cycles per second) is 50 ohms. The inductance of the coil is nearly         [MP PMT 2000]

    A)            2.2 henry                               

    B)            0.22 henry

    C)            1.6 henry                               

    D)            0.16 henry

    Correct Answer: B

    Solution :

               \[{{X}_{L}}=2\pi \nu \,L\,\Rightarrow \,L=\frac{{{X}_{L}}}{2\pi \nu }=\frac{50}{2\times 3.14\times 50}=0.16\,H\]


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