Question

If the voltage in an ac circuit is represented by the equation, $V=220\sqrt{2}\sin (314t-\varphi )$, calculate RMS value of the voltage.

• A. $220V$
• B. $314V$
• C. $220\sqrt{2}V$
• D. $220/\sqrt{2}V$

Answer 1

Answer: (A)

$220V$

rms value of voltage = $\frac{V_{peak}}{\sqrt{2}}=220V$