RESONANCE IN RLC CIRCUIT
Resonance is defined as a condition in a circuit containing at least one inductor & one capacitor when the supply voltage & supply current are in phase. Thus at Resonance the equivalent impedance of the circuit is purely resistive. Since the supply voltage and supply current are in phase the power factor of the resonance circuit is unity. So Resonance is a condition which occurs in a circuit where inductor and capacitor are being used.