In an ac circuit, peak value of voltage is $423\, volts$. Its effective voltage is .......... $volts$

For the $RC$ circuit shown, the resistance is $R = 10.0\ W$, the capacitance is $C = 5.0\ F$ and the battery has voltage $\xi= 12$ volts . The capacitor is initially uncharged when the switch $S$ is closed at time $t = 0$. At some time later, the current in the circuit is $0.50\ A$. What is the magnitude of the charge across the capacitor at that moment?.......$µC$

The voltage of $AC$ source varies with time according to the equation, $V = 100\, \sin 100\, \pi \, t \, \cos \,100\, \pi \,t$. Where $t$ is in second and $V$ is in volt. Then:-

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.

The ratio of peak value and r.m.s value of an alternating current is

A small signal voltage $V(t) = V_0\,\, sin \omega \,t$ is applied across an ideal capacitor $C$