Impedance is the magnitude of the complex resistance \( Z \). This formula gives the total impedance of a driven resistor-coil-capacitor parallel circuit, in short: RLC parallel circuit.
The inductance of the coil connected to the RLC parallel circuit.
Capacitance of the capacitor connected to the RLC parallel circuit.
Resistance of a resistor connected to the RLC parallel circuit.
The angular frequency \( \omega = 2\pi \, f \) indicates the frequency \(f\) at which the LRC parallel circuit oscillates. The frequency \(f\) is specified, for example, by the frequency of the applied AC voltage.