Q 12-07-014NEETJEE MainEasy
The rms value of an alternating voltage $V = 311\sin(100\pi t)$ volt and its frequency are
Answer: (A) $220$ V and $50$ Hz
$V_{rms} = \dfrac{311}{\sqrt{2}} \approx 220$ V. $\omega = 100\pi \Rightarrow f = 50$ Hz.
Solution by Sreeraj P, M.Sc Physics