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  4. The peak voltage in a 220 V AC source is

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Q. The peak voltage in a $220 \, V$ AC source is

NTA AbhyasNTA Abhyas 2022

Solution:

Given root mean square voltage,
$V_{r m s}=220 \, V$
Peak voltage will be given by,
$V_{p e a k}=\sqrt{2} \, V_{r m s}$
$V_{p e a k}=\sqrt{2} \, \left(220\right)$
$V_{p e a k}\approx310 \, V$