Electric Circuits (Book with DVD)

An electric circuit is a path in which electrons from a voltage or current source  ow. Typically, an electric circuit is composed of wires and cables connected to circuit elements and devices that leverage the  ow and resistances. The circuit is a closed loop formed by a power source, wires, a fuse, a load, and a switch. Electricity  ows through the circuit and is delivered to the object it is powering, such as the vacuum motor or light bulb, after which the electricity is sent back to the original source; this return of electricity enables the circuit to keep the electricity current  owing. Most devices that run on electricity contain an electrical circuit; when connected to a source of power, such as being plugged into an electrical outlet, electricity can run through the electrical circuit within the device and then return to the original power source, to continue the  ow
of electricity.