In a series $LCR$ circuit, the inductance, capacitance and resistance are $L =100\, mH , C =100 \mu F$ and $R =$ $10 \Omega$ respectively. They are connected to an $AC$ source of voltage $220\, V$ and frequency of $50\, Hz$. The approximate value of current in the circuit will be…..$A.$

A series $R-C$ circuit is connected to an alternating voltage source. Consider two situations 

$(a)$ When capacitor is air filled.

$(b)$ When capacitor is mica filled.

Current through resistor is $i$ and voltage across capacitor is $V$ then

In a simple $L-R$ circuit with $A.C$. source the potential difference at any instant across inductor and resistance are $V_L$ and $V_R$ respectively and $A.C.$ souree has potential difference $V_{Ac}$ at the same instant. Then

A circuit when connected to an $A.C.$ source of $12\; V$ gives a current of $0.2\; A$. The same circuit when connected to a $D.C.$ source of $12\; V$, glves a current of $0.4\; A$. The circuit is

A capacitor of capacitance $C$ has initial charge $Q_0$ and connected to inductor $'L'$ as shown, at $t = 0$ switch $S$ is pressed. The current through the inductor when energy in the capacitor is three times of the energy of the inductor is