Circuit Diagram and its Components

Circuit Diagram and its Components

A circuit diagram can be defined as the graphical representation of an electrical circuit. An electrical circuit is a path or line through which an electrical current flow. The path may be closed, making it a loop. A closed circuit makes electrical current flow possible. It may also be an open circuit, where the electron flow is cut short because the path is broken. An open circuit doesn’t allow electrical current to flow. A schematic diagram shows the components of the circuit using standardized symbols.

Simple Circuit Diagram:

A circuit diagram is a simplified representation of the components of an electrical circuit. It shows the relative positions of all the elements and their connections to one another. The presentation of the interconnections between circuit components in the schematic diagram does not necessarily correspond to the physical arrangements in the finished device.

Components of Circuit Diagram:

Ammeter: It is used to measure the current passing at a particular point.


Voltmeter: It is used to measure the voltage between two points in a circuit.


Battery: It is a combination of cells.


Switch: It is a plug key and it is used to allow or stop the flow of current upon being pressed.


Electric Bulb: It is an electronic device which uses electricity to glow.

Electric Bulb