An electric lamp is connected to a $220 V, 50 Hz$ supply. The peak value of the voltage is......$V$.

In India,$AC$ voltage becomes zero how many times in $1$ $sec$?

Both alternating current and direct current are measured in amperes. But how is the ampere defined for an alternating current?

If an $AC$ main supply is given to be $220 \ V$,what would be the average e.m.f. during a positive half cycle?

An alternating e.m.f. is given by $e = e_{0} \sin(\omega t)$. In what time will the e.m.f. reach half its maximum value,if $e$ starts from zero? ($T$ = Time period)

$A$ standard filament lamp consumes $100\,W$ when connected to $200\,V$ $AC$ mains supply. The peak current through the bulb will be $........\,A$.