Test: Oscillation of Energy at Resonance - Electrical Engineering (EE) MCQ

The energy stored in a capacitor is in the form of electrostatic energy whereas the energy stored in the inductor is in the form of magnetic energy.

The energy stored in a capacitor is in the form of electrostatic energy whereas the energy stored in the inductor is in the form of magnetic energy.

At resonance, the circuit appears resistive because the capacitive and inductive energies are equal to each other.

At resonance, the capacitive energy is equal to the inductive energy and the circuit appears to be resistive in nature.

At resonance, the capacitive energy is equal to the inductive energy and the circuit appears to be resistive in nature. The capacitor stores electrostatic energy and the inductor stores magnetic energy hence they are equal.

At any instant, the magnetic energy stored in an inductor is E=LIm²/2, where Im is the maximum current and L is the value of the inductor.

The maximum electrostatic energy stored in a capacitor at any instance is 1/2*CVm², where C is the capacitance value and Vm is the peak voltage.

Q is the ratio of the reactive power to the average power. The reactive power is due to the inductance or capacitance and the average power is due to the resistance.

Q is the ratio of the reactive power to the average power.
Substituting the given values from the question, we get Q=2.

Q is the ratio of the reactive power to the average power.
Substituting the given values from the question, we get reactive power= 10W.