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

  • question_answer
    In a LCR circuit the pd between the terminals of the inductance is 60 V, between the terminals of the capacitor is 30V and that between the terminals of resistance is 40V. the supply voltage will be equal to ??         [KCET 2004]

    A)            50 V                                         

    B)            70 V

    C)            130 V                                       

    D)            10 V

    Correct Answer: A

    Solution :

               \[V=\sqrt{V_{R}^{2}+{{({{V}_{L}}-{{V}_{C}})}^{2}}}\] \[=\sqrt{{{(40)}^{2}}+{{(60-30)}^{2}}}=50V\]


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