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.

Inductance

$$ L $$ Unit $$ \mathrm{H} $$

The inductance of the coil connected to the RLC parallel circuit.

$$ R $$ Unit $$ \mathrm{\Omega} = \frac{ \mathrm{kg} \, \mathrm{m}^2 }{ \mathrm{A}^2 \, \mathrm{s}^3 } $$

Resistance of a resistor connected to the RLC parallel circuit.

Angular frequency

$$ \omega $$ Unit $$ \frac{\mathrm{rad}}{\mathrm s} $$

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.

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