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NEET UG PHYSICS MCQ: ALTERNATING CURRENT

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Application +4 | -1
The instantaneous value of current in an A.C. circuit is I=2sin⁡(100  π  t+π/3)AI = 2\sin \left( {100\;\pi \;t + \pi /3} \right)A The current will be maximum for the first time at
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Correct option: D
t=1600st = \frac{1}{{600}}s
Option D (t=1600st = \frac{1}{{600}}s) is correct because the current is maximum when the argument of the sine function is π/2\pi/2, so 100πt+π/3=π/2100\pi t + \pi/3 = \pi/2, which gives t=1600st = \frac{1}{{600}}s.

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