Question

The peak value of $AC$ voltage on a $220V$ mains is:

• A. $240\sqrt{2}V$
• B. $230\sqrt{2}V$
• C. $220\sqrt{2}V$
• D. $200\sqrt{2}V$

Answer 1

Answer: (C)

Here : rms voltage $V_{rms}=220V$
Using the relation,
$V_{rms}=\frac{\text{ peak voltage }}{\sqrt{2}}$
Hence, peak value of A.C. voltage
$V_P=220\sqrt{2}V$