Power and Energy

The circuit is being excited by the energy initially stored in the capacitor and inductor.

The circuit is being excited by the energy initially stored in the capacitor and inductor.

The circuit is being excited by the energy initially stored in the capacitor and inductor.

The energy that was initially stored in the inductor is eventually dissipated in the resistor.

The energy that was initially stored in the capacitor is eventually dissipated in the resistor.

The circuit is being excited by the energy initially stored in the capacitor and inductor.

If \(p(t)\) is the power associated with the signal, the energy carried by the signal is

Parseval’s theorem shows that the energy associated with a non-periodic signal is spread over the entire frequency spectrum, whereas the energy of a periodic signal is concentrated at the frequencies of its harmonic components.

In physical systems, damping is produced by processes that dissipate the energy stored in the oscillation. Examples include viscous drag in mechanical systems, resistance in electronic oscillators, and absorption and scattering of light in optical oscillators.