An inductor of inductance $2\,mH$ is connected to a $220\,V , 50\,Hz$ $a.c.$ source. Let the inductive reactance in the circuit is $X _1$. If a $220\,V$ dc source replaces the ac source in the circuit, then the inductive reactance in the circuit is $X _2 . X _1$ and $X _2$ respectively are

Discuss power in $AC$ circuit containing only capacitor. 

A coil has resistance $30\,ohm$ and inductive reactance $20\,ohm$ at $50\,Hz$ frequency. If an ac source, of $200\,volt$, $100\,Hz$, is connected across the coil, the current in the coil will be…….$A$

A circuit consists of a coil with inductance $L$ and an uncharged capacitor of capacitance $C$. The coil is in a constant uniform magnetic field such that the flux through the coil is $\phi$. At time $t=0 \,min$, the magnetic field is abruptly switched $OFF$. Let $\omega_{0}=1 / \sqrt{L C}$ and ignore the resistance of the circuit.Then,

An $LC$ circuit consists of a capacitor and a coil with a large number of turns. Suppose all the linear dimensions of all elements of the circuit are increased by a factor of $2$ while keeping the number of turns on the coil constant. How much does the resonant frequency of the circuit change?