A series RLC Circuit consists of Resistance (R) ohm, inductive coil Of inductance of (L) henry and Capacitor (C) farads. Series RLC Circuit is also known as Acceptor circuit...since it allows maximum current to flow throught it.
At resonance, Voltages across C and L are equal and opposite.
In series RLC Circuit Current is Maximum , Which implies Impedance is Minium...And impedance is equal to Resistance (R)
Resonant frequency f o is obtained by {1/2pi (sqrt [LC])}
