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12th Class Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Case Based (MCQs) - Alternating Currents

  • question_answer
    In a inductive circuit, by what value of phase angle does alternating current lags behind e.m.f.?

    A) \[45{}^\circ \]                          

    B) \[90{}^\circ \]    

    C) \[120{}^\circ \]                        

    D) \[75{}^\circ \]

    Correct Answer: B

    Solution :

    (b) \[90{}^\circ \] In an inductor voltage leads the current by \[\frac{\pi }{2}\] or current lags the voltage by \[\frac{\pi }{2}\]. 


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