If the value of potential in an $AC$ circuit is $10 \ V$,then the peak value of potential is

The ratio of the peak value to the root mean square (r.m.s.) value of an alternating current is:

An alternating current is given by $I=100 \sin (50 \pi t)$. How many times will the current become zero in one second (in $times$)?

The instantaneous value of an alternating current is given by $I = 50 \sin(100 \pi t)$. It will achieve a value of $25 \ A$ after a time interval of (given $\sin 30^{\circ} = 0.5$):

An alternating current of $rms$ value $10 \, A$ is passed through a $12 \, \Omega$ resistor. The maximum potential difference across the resistor is

$A$ $40 \ \Omega$ electric heater is connected to a $200 \ V, 50 \ Hz$ mains supply. The peak value of electric current flowing in the circuit is approximately......$A$