The “inner conductor” typically refers to the central conducting element in a coaxial cable. Coaxial cables consist of an inner conductor surrounded by an insulating layer, a metallic shield, and an outer insulating layer. The inner conductor carries the electrical signal in the form of current, while the outer layers provide shielding to prevent interference and maintain signal integrity. Coaxial cables are commonly used in telecommunications, broadcasting, networking, and other applications that require reliable signal transmission.