The maximum value of $a.c.$ voltage in a circuit is $707 \ V$. Its $rms$ value is.....$V$

The average value of the potential difference $V$ shown in the figure is:

If an alternating voltage is represented as $E = 141 \sin(628 t)$,then the rms value of the voltage and the frequency are respectively:

$A$ periodic voltage $V$ varies with time $t$ as shown in the figure. $T$ is the time period. The $r.m.s.$ value of the voltage is:

The ratio of the peak value to the root mean square (r.m.s.) value of an alternating current is:

$A$ resistance of $20 \, \Omega$ is connected to a source of an alternating potential $V = 220 \sin(100 \pi t)$. The time taken by the current to change from its peak value to its r.m.s. value is: