Question

A capacitor, initially charged, and an inductor form an LC circuit. When the electric current in the circuit is equal to zero how much energy is stored on each device?

A) Inductor: zero energy. Capacitor: zero energy
B) Inductor: Half of the maximum energy. Capacitor: Half of the maximum energy
C) Inductor: maximum energy. Capacitor: zero energy
D) Inductor: zero energy. Capacitor: maximum energy
E) Inductor: maximum energy. Capacitor: maximum energy

Answer 1

When the electric current in an LC circuit is equal to zero, all of the energy is stored in the capacitor and none in the inductor. The correct answer is D) Inductor: zero energy. Capacitor: maximum energy.