Electrical element

An electrical element is a conceptual abstraction representing idealized electrical components, such as resistors, capacitors, and inductors, used in the analysis of electrical networks. All electrical networks can be analyzed as multiple electrical elements interconnected by wires. 

Every electrical element has at least two terminals: an area of an electrical component that can receive the electric current or let it out. Simple electrical components, called also dipoles, have only one input terminal and one output terminal. A terminal is also used to make connections, which means connecting an electrical component to another electrical component. Examples of dipoles are batteries, bulbs, switches, and so on. Some complex electrical components can have multiple input terminals and multiple output terminals (such as transistors or operational amplifiers).