What equation is used to calculate inductive reactance?

Inductive reactance, represented as XL, is calculated using the formula XL = 2πfL. In this equation, f stands for the frequency of the alternating current in hertz, and L stands for the inductance in henries. The factor of 2π comes from the relationship between linear frequency and angular frequency, where angular frequency is expressed in radians per second.

This formula helps quantify how much the inductor opposes the change in current due to its stored magnetic energy. As the frequency increases, inductive reactance also increases, which directly affects how inductors behave in AC circuits. Understanding this relationship is crucial for analyzing and designing circuits involving inductors, as it informs engineers about the potential voltage drops across the inductors and how they affect overall circuit performance.

The other options do not correctly represent the relationship between inductance, frequency, and inductive reactance, which invalidates them as equations for calculating inductive reactance.