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JEE Main & Advanced Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Self Evaluation Test - Alternating Current

  • question_answer
    If an LCR series circuit is connected to an ac source, then at resonance the

    A) voltage across R is zero

    B) voltage across R equals the applied voltage

    C) voltage across C is zero

    D) voltage across L equals the applied voltage

    Correct Answer: B

    Solution :

    [b] In series RLC circuit, Voltage, \[V=\sqrt{V_{R}^{2}+{{({{V}_{L}}-{{V}_{C}})}^{2}}}\] And, at resonance, \[{{V}_{L}}={{V}_{C}}\] Hence, \[V={{V}_{R}}\]


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