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

What are $A.C.$ signals ? 

Match the following

Currents                                     $r.m.s.$ values

(1)${x_0}\sin \omega \,t$                               (i)$ x_0$

(2)${x_0}\sin \omega \,t\cos \omega \,t$                  (ii)$\frac{{{x_0}}}{{\sqrt 2 }}$

(3)${x_0}\sin \omega \,t + {x_0}\cos \omega \,t$        (iii) $\frac{{{x_0}}}{{(2\sqrt 2 )}}$

Assertion : Ohm’s law cannot be applied to $a.c$ circuit.

Reason : Resistance offered by capacitor for a.c source depends upon the frequency of the source.

The voltage of domestic ac is $220$ $ volt$. What does this represent

The mean value of current for half cycle for a current variation shown by the graph is