An ideal capacitor having a charge q = q0 cos wt is connected across an ideal inductor L - Physics - Alternating Current

Question

An ideal capacitor having a charge q = q0 cos wt is connected
across an ideal inductor ‘L’
through a switch ‘S’ On closing the switch, show that
the sum of the energies in the capacitor
and inductor is constant in time in the free oscillations of the LC
circuits ​

Brajesh Sinha · Accepted Answer

simple: as there is no resistance is connected across circuit so no
loss of energy takes place so energy of inductor + capacitor
constant inductor with capacitor have power factor =to 0

An ideal capacitor having a charge q = q0 cos wt is connected across an ideal inductor ‘L’ through a switch ‘S’. On closing the switch, show that the sum of the energies in the capacitor and inductor is constant in time in the free oscillations of the LC circuits.​

An ideal capacitor having a charge q = q0 cos wt is connected across an ideal inductor ‘L’
through a switch ‘S’. On closing the switch, show that the sum of the energies in the capacitor
and inductor is constant in time in the free oscillations of the LC circuits.