Updated: Nov 18, 2020
Series RLC circuits consist of a resistance, a capacitance and an inductance connected in series across an alternating supply.
Inductive Reactance, XL.,Capacitive Reactance, XC, Circuit Impedance, Z, phase angle α.
and the resonance frequency, fr in a RLC circuit.
In a series RLC circuit there becomes a frequency point were the inductive reactance of the inductor becomes equal in value to the capacitive reactance of the capacitor. In other words, XL = XC. The point at which this occurs is called the Resonant Frequency point, ( ƒr ) of the circuit, and as we are analysing a series RLC circuit this resonance frequency produces a Series Resonance.
Series Resonance circuit