An inductance of $1 \ H$ is connected in series with an $AC$ source of $220 \ V$ and $50 \ Hz$. The inductive reactance (in ohm) is: (in $\pi$)

$A$ $0.7\,H$ inductor is connected across a $120\,V, 60\,Hz$ $AC$ source. The current in the inductor will be very nearly: (in $,A$)

The average power dissipated in a pure inductor is

$A$ resistor of resistance $100 \Omega$ is connected to an $AC$ source $\varepsilon = 10 \sin (250 \pi t)$. The energy dissipated as heat during $t = 0$ to $t = 1 \text{ ms}$ is approximately.

$A$ $42 \, mH$ inductor is connected to a $200 \, V, 50 \, Hz$ a.c. supply. The r.m.s. value of current in the circuit will be nearly (Take $\pi = \frac{22}{7}$) (in $ \, A$)

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