Question

The peak value of $AC$ voltage on a $220\, V$ 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 $V_{r m s}=220\, V$
Using the relation,
$V_{rms}=\frac{\text { peak voltage }}{\sqrt{2}}$
Hence, peak value of A.C. voltage
$V_{P}=220 \sqrt{2} V$