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

  • question_answer
    In an ac circuit the reactance of a coil is \[\sqrt{3}\] times its resistance, the phase difference between the voltage across the coil to the current through the coil will be   [KCET (Engg.) 2000]

    A)            \[\pi /3\]                                

    B)            \[\pi /2\]

    C)            \[\pi /4\]                                

    D)            \[\pi /6\]

    Correct Answer: A

    Solution :

               \[\tan \varphi =\frac{{{X}_{L}}}{R}=\frac{\sqrt{3}\,R}{R}=\sqrt{3}\] Þ \[\varphi ={{60}^{o}}=\pi /3\]


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