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

  • question_answer
    What is the value of the phase angle between current and voltage?

    A) \[53{}^\circ 9'\]                        

    B) \[63{}^\circ 9'\]   

    C) \[55{}^\circ 4'\]                        

    D) \[50{}^\circ \]

    Correct Answer: C

    Solution :

    (c) \[55{}^\circ 4'\]             \[\tan \,\phi =\frac{{{X}_{L}}-{{X}_{C}}}{R}=\frac{31.4-14}{12}=1.45\]             \[\phi ={{\tan }^{-1}}(1.45)=55{}^\circ 4'\]


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