What is resonance?

Resonance

Resonance occurs when the reactance of an inductor balances the reactance of a capacitor at some given frequency. In such a resonant circuit where it is in series resonance, the current will be maximum and offering minimum impedance. In parallel resonant circuits the opposite is true.

The formula for resonance is:

2 * pi * f * L = 1 / (2 * pi * f * C)


where: 2 * pi = 6.2832; f = frequency in hertz L = inductance in Henries and C = capacitance in Farads