What property of an inductor is measured in ohms in an AC system?

Inductive reactance is a key concept in AC circuits that measures the opposition an inductor presents to the flow of alternating current. This is analogous to resistance in a direct current (DC) circuit; however, inductive reactance specifically takes into account the frequency of the AC signal as well as the inductance of the coil. The formula for inductive reactance is (X_L = 2\pi f L), where (X_L) is the inductive reactance, (f) is the frequency in hertz, and (L) is the inductance in henries.

In alternating current systems, inductive reactance contributes to the phase difference between the current and voltage, which is an essential characteristic to consider when analyzing AC circuits. Therefore, the property measured in ohms in an AC system that pertains to inductors is indeed inductive reactance, making it the correct choice.