Which of the following components of a $LCR$ circuit, with $ac$ supply, dissipates energy
$L$
$R$
$C$
All of these
In an $A.C.$ circuit, $I_{\text {rms }}$ and $I_{0}$ are related as
The $r.m.s.$ value of an ac of $50\,Hz$ is $10\,amp$ . The time taken by the alternating current in reaching from zero to maximum value and the peak value of current will be
The peak value of an Alternating current is $ 6$ amp, then r.m.s. value of current will be
If $I_1, I_2, I_3$ and $I_4$ are the respective $r.m.s$. values of the time varying currents as shown in the four cases $I, II, III$ and $IV$. Then identify the correct relations.
If an ac main supply is given to be $220 V$. What would be the average e.m.f. during a positive half cycle.....$V$