Inductors, often referred to as coils or chokes, play a crucial role in various electronics and power systems. In essence, any conductor through which an AC current flows inherently possesses inductive properties and could be categorized as an inductor. To enhance the inductive effect, practical inductors are created by winding a conductive wire around a core made of magnetic material. When a current flows through an inductor, the voltage across it is directly proportional to the rate of change of the current over time. This proportionality constant is known as the inductance of the inductor, and it is measured in henry. Inductance opposes abrupt changes in the current flowing through it. So, the current through an inductor cannot change instantaneously. The physical dimensions, core material, and construction of the inductor determine its inductance. Inductors come in a variety of values and types, ranging from a few microhenrys to tens of henrys. They can either be fixed or variable, with cores constructed from a variety of materials including iron, steel, plastic, or even air.