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

  • question_answer
    In an ac circuit I = 100 sin 200 pt. The time required for the current to achieve its peak value will be  [DPMT 2003]

    A)            \[\frac{1}{100}sec\]          

    B)            \[\frac{1}{200}sec\]

    C)            \[\frac{1}{300}sec\]          

    D)            \[\frac{1}{400}sec\]

    Correct Answer: D

    Solution :

                       The current takes \[\frac{T}{4}\]sec to reach the peak value.                    In the given question \[\frac{2\pi }{T}=200\pi \Rightarrow T=\frac{1}{100}sec\]            \[\therefore \]Time to reach the peak value \[=\frac{1}{400}sec\]


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