What is inductive reactance?

What is inductive reactance?

• A. A type of electrical resistance in direct current
• B. Reactance caused by a load lost in a changing current
• C. Loss encountered when current flows through a coil
• D. The capacity of the current to work against resistance

Answer: (C)

Inductive reactance refers to the opposition that an inductor presents to the flow of alternating current (AC) due to the magnetic fields created as the current changes over time. When current flows through a coil, it generates a magnetic field, and any change in this current leads to a change in the magnetic field, which creates an electromotive force (EMF) opposing the change in current. This phenomenon is quantified by the formula \(X_L = 2\pi f L\), where \(X_L\) is inductive reactance, \(f\) is the frequency of the AC, and \(L\) is the inductance of the coil. Thus, option C accurately defines inductive reactance as the loss or opposition encountered when current flows through a coil, particularly due to the effects of inductance in an AC circuit. Understanding this concept is essential for working with circuits that include inductors, as it plays a crucial role in the behavior and efficiency of electrical systems.

Inductive reactance refers to the opposition that an inductor presents to the flow of alternating current (AC) due to the magnetic fields created as the current changes over time. When current flows through a coil, it generates a magnetic field, and any change in this current leads to a change in the magnetic field, which creates an electromotive force (EMF) opposing the change in current. This phenomenon is quantified by the formula (X_L = 2\pi f L), where (X_L) is inductive reactance, (f) is the frequency of the AC, and (L) is the inductance of the coil.

Thus, option C accurately defines inductive reactance as the loss or opposition encountered when current flows through a coil, particularly due to the effects of inductance in an AC circuit. Understanding this concept is essential for working with circuits that include inductors, as it plays a crucial role in the behavior and efficiency of electrical systems.