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

  • question_answer
    An alternating voltage is connected in series with a resistance R and an inductance L If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is                                              [CPMT 1990]

    A)            350 V                                       

    B)            250 V

    C)            500 V                                       

    D)            300 V

    Correct Answer: B

    Solution :

                       The applied voltage is given by \[V=\sqrt{V_{R}^{2}+V_{L}^{2}}\]            \[V=\sqrt{{{(200)}^{2}}+{{(150)}^{2}}}\]\[=250\ volt\]


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