What Are The Simple Electric Circuits?
An electric current can continually flow along a wire only if the wire forms a complete path or circuit. As the current travels along a continuous circle of wire it goes all the way around and arrives back at the start or source. This whole arrangement is called an electric circuit. If the circuit is broken, no current will flow. The simplest circuit consists of a thin copper wire connected to the terminals of a dry cell. An electric circuit normally has an object called a resistance. Such as an electric bulb, along its path. As the current flows through the wire, it also passes through the object and produces an effect on it. In this way, electricity can be made use for lighting and heating purposes. An electric switch can be included in a circuit. The switch is a device that serves to complete or break the circuit, and so controls the flow of electricity.The terminal of the cell can be considered to be at different ‘electrical pressures’, more correctly termed ‘electrical potential’.
