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CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2000

  • question_answer
    In an A.C. 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:

    A)  \[\pi /3\]                            

    B) \[\pi /2\]

    C)  \[\pi /4\]                            

    D)  \[\pi /6\]

    Correct Answer: A

    Solution :

     From the condition of the question the reactance of the coil is \[\sqrt{3}\]times of resistance, so \[Z=\sqrt{3}R\] \[\text{o }\!\!|\!\!\text{ =}\,\text{ta}{{\text{n}}^{-1}}\frac{Z}{R}={{\tan }^{-1}}3\] Therefore, \[\text{o }\!\!|\!\!\text{ =}\frac{\pi }{3}\]


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