What is the term for the ability of an inductor in a transformer to resist changes in current?

The term that describes the ability of an inductor in a transformer to resist changes in current is self-inductance. Self-inductance occurs when a changing current through a coil of wire generates an electromotive force (emf) that opposes the change in current, according to Lenz's Law. This phenomenon is a fundamental characteristic of inductors in transformers, where the inductance property helps to regulate the current flow within the coil.

Self-inductance is crucial for the efficient functioning of transformers as it allows them to maintain a stable magnetic field and enhances their ability to convert voltages and currents between different levels. The resistance to changes in current ensures that transformers can operate effectively in AC circuits, where the alternating nature of current would otherwise lead to instability and inefficiency.

Understanding this concept is essential for electrical craft professionals as it underpins the operation of many electronic and electrical devices that rely on inductive components to manage power and signal integrity.