Electrical Symbols and Their Functions

1. It is used as a source of power.

• battery

• conductor

• diode

• circuit breaker

2. It is a device for making and breaking the connection In an electric circuit.

• circuit breaker

• fuse

• switch

• terminal

3. It emits light when heated by electricity.

• conductor

• incandescent lamp

• switch

• battery

4. It is an output device used with computer systems.

• battery

• speaker

• push button

• antenna

5. It is used for measuring electric current in amperes.

• Ammeter

• Galvanometer

• voltmeter

• wattmeter

6. It is used for measuring electric potential in volts.

• Ammeter

• Galvanometer

• voltmeter

• wattmeter

7. It allows the flow of current in one direction only.

• Capacitor

• Lightning Arrester

• Male Plug

• Diode

8. It stops the flow of current in an electric circuit as a safety measure.

• circuit breaker

• fuse

• switch

• conductor

9. It detects and measures small electric currents.

• Ammeter

• Galvanometer

• voltmeter

• wattmeter

10. It permits the flow of electric charges in one or more directions.

• ammeter

• galvanometer

• voltmeter

• conductor