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

  • question_answer
    An ac circuit consists of an inductor of inductance 0.5 H and a capacitor of capacitance 8 mF in series. The current in the circuit is maximum when the angular frequency of ac source is                                                   [CPMT 1986]

    A)            500 rad/sec                           

    B)            2 ´ 105 rad/sec

    C)            4000 rad/sec                        

    D)            5000 rad/sec

    Correct Answer: A

    Solution :

                       Current will be maximum at the condition of resonance. So resonant frequency \[{{\omega }_{0}}=\frac{1}{\sqrt{LC}}=\frac{1}{\sqrt{0.5\times 8\times {{10}^{-6}}}}\] = 500 rad/s


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