$(a)$ The peak voltage of an $ac$ supply is $300\; V$. What is the $rms$ voltage?
$(b)$ The $rms$ value of current in an ac circuit is $10\; A$. What is the peak current?
$(a)$ The peak voltage of an $ac$ supply is $300\; V$. What is the $rms$ voltage?
$(b)$ The $rms$ value of current in an ac circuit is $10\; A$. What is the peak current?
$(a)$ Peak voltage of the ac supply, $V _{0}=300 \,V$ We know
$V_{m x}=\frac{V_{0}}{\sqrt{2}}=\frac{300}{\sqrt{2}}=212.1\, V$
$(b)$ The $rms$ value of current is given as $ I=10\,A$ Using above identity for current peak current is given as:
$I _{0}=1.414 \times I _{ rms }$
$I _{0}=1.414 \times 10=14.14 \,A$
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