A choke coil is an electrical component that helps to filter and regulate the flow of electrical current. It is also known as an inductor or simply a coil. There are a few synonyms for choke coil, such as a filter choke, inductance coil, or reactor coil. The term filter choke is often used in audio or radio circuits, where it is used to block unwanted high-frequency noise. Inductance coil is a more technical term used in engineering and physics, while the term reactor coil is used in power system applications. Regardless of the term used, the function of a choke coil remains the same, which is to maintain a stable and smooth flow of electric current.