An electrical circuit is the physical manifestation of the connection between electrical devices. Batteries, resistors, inductors, capacitors, and switches or transistors are the basic components of an electrical circuit. A circuit in an electrical network is a closed system. You have a circuit if you have a wire with electrons flowing through it. Electrons in a copper wire will move around between the atoms of copper so long as the wire is left alone. However, when this copper wire is connected to a battery, the free electrons are pushed toward the battery's positive terminal. The term electromotive force describes this pushing force . Volts are used to describe the E.M.F.
