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JEE Main & Advanced Physics Alternating Current / प्रत्यावर्ती धारा Question Bank Alternating Current, Voltage and Power

  • question_answer
    An ac source is rated at 220V, 50 Hz. The time taken for voltage to change from its peak value to zero is [Orissa JEE 2003]

    A)            50 sec                                      

    B)            0.02 sec

    C)            5 sec                                        

    D)            \[5\times {{10}^{-3}}\] sec

    Correct Answer: D

    Solution :

               Required time \[t=T/4=\frac{1}{4\times 50}=5\times {{10}^{-3}}sec\]


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