Q7.12 (a) An circuit contains a inductor and a capacitor with an initial charge of . The resistance of the circuit is negligible. Let the instant the circuit is closed be .
What is the total energy stored initially? Is it conserved during oscillations?
The inductance of the inductor:
The capacitance of the capacitor :
The initial charge on the capacitor:
Total energy present at the initial moment:
Hence initial energy in the circuit is 1J. Since we don't have any power-consuming element like resistance in the circuit, the energy will be conserved