In a circuit containing an inductance of zero resistance,the $e.m.f.$ of the applied $ac$ voltage leads the current by ......$^o$

$A$ sinusoidal voltage $V(t) = 100 \sin(500t)$ is applied across a pure inductance of $L = 0.02 \, H$. The current through the coil is:

$A$ capacitor of capacity $C$ has reactance $X$. If capacitance and frequency become double then reactance will be

The value of the current through an inductance of $1 \, H$ and of negligible resistance,when connected to an $ac$ source of $200 \, V$ and $50 \, Hz$ is: (in $, A$)

Explain the dissipation of electrical energy when an alternating current passes through a resistor.

An alternating voltage $v(t) = 220 \sin(100 \pi t) \text{ V}$ is applied to a purely resistive load of $50 \, \Omega$. The time taken for the current to rise from zero to half of its peak value is ..... $ms$.