A circuit is a complete circular path that electricity flows through. It is composed of individual electronic components, such as resistors, transistors, capacitors, inductors, and diodes, connected by conductive wires or traces through which electric current can flow. A circuit can be categorized as an analog circuit, a digital circuit, or a mixed-signal circuit (a combination of analog circuits and digital circuits) . The most widely used semiconductor device in electronic circuits is the MOSFET (metal–oxide–semiconductor field-effect transistor) .
In electronics, electrons come out of the power source, travel along conductors, go through a load to perform work, and are finally returned to the source. The relationship between the electrical flow and load is described in Ohms Law. A circuit is an unbroken loop of conductive material that allows charge carriers to flow through continuously without beginning or end. If a circuit is “broken,” that is, making a full circle back to the electrical source, no electrons will move.
A circuit is a device made of other, smaller electrical devices that can move the flow of electricity through itself to power larger devices. Every complete circuit must have a power source, wires, and a load. The load is the device that uses the electrical energy.
