The current flowing through an ac circuit is given by
I = 5 sin(120$\pi$t)A
How long will the current take to reach the peak value starting from zero?
Solution
<p>$\omega = 120\pi$</p>
<p>$\Rightarrow T = {1 \over {60}}\sec$</p>
<p>The current will take its peak value in ${T \over 4}$ time</p>
<p>So $t = {T \over 4}$</p>
<p>$= {1 \over {240}}s$</p>
About this question
Subject: Physics · Chapter: Alternating Current · Topic: AC Circuits: R, L, C
This question is part of PrepWiser's free JEE Main question bank. 115 more solved questions on Alternating Current are available — start with the harder ones if your accuracy is >70%.