The peak value of $220 \, V$ of $ac$ mains is ...... $V$.

In alternating current circuits,the $a.c.$ meters measure

What are $DC$ signals and $AC$ signals? Why do we prefer an $AC$ signal?

If a direct current of $a$ ampere is superimposed with an alternating current $I = b \sin \omega t$,then the effective value of the resulting current is

An alternating current at any instant is given by $i = [6 + \sqrt{56} \sin (100 \pi t + \frac{\pi}{3})] \ A$. The rms value of the current is . . . . . . . (in $A$)

The electric current in the circuit is given as $i = i_{0}(t / T)$. The r.m.s current for the period $t = 0$ to $t = T$ is . . . . . .