In an $ac$ circuit, the instantaneous voltage $e(t)$ and current $I(t)$ are given by $e(t)$ = $5[cos\ \omega t + \sqrt 3\ sin\ \omega t]\ volt$ $i (t)$ = $5[sin(\omega t +\frac {\pi}{4})]\ amp$ then
Current leads voltage by $\frac {\pi}{4}$
Voltage leads current by $\frac {\pi}{3}$
Voltage leads current by $\frac {\pi}{6}$
Current leads voltage by $\frac {\pi}{12}$
A small signal voltage $V(t) = V_0\,\, sin \omega \,t$ is applied across an ideal capacitor $C$
If an alternating voltage is represented as $E = 141\,sin\, (628\,t),$ then the rms value of the voltage and the frequency are respectively
If an ac main supply is given to be $220 V$. What would be the average e.m.f. during a positive half cycle.....$V$
$(a)$ 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?
The frequency of $ac$ mains in India is.......$Hz$