Translations:Dictionary:Impedance/22/en

1. The apparent resistance to the flow of alternating current, analogous to resistance in a dc circuit. Impedance is (in general) complex, of magnitude Z with a phase angle $\gamma$. These can be expressed in terms of resistance R (in ohms), inductive reactance $X_{L}=2\pi fL$, and capacitive reactance $X_{C}={\frac {1}{2\pi fC}}$: