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NEET UG PHYSICS MCQ: ALTERNATING CURRENT

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Application +4 | -1
The current flowing through an ac circuit is given by I=5sin⁡(120πt)A.I = 5\sin (120\pi t)A. How long will the current take to reach the peak value starting from zero?
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Correct option: D
1240 s\frac{1}{{240}}\,s
Option D is correct. The time to reach the peak value is one-quarter of the period, calculated as 14f=1240\frac{1}{4f} = \frac{1}{240} s.

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