Earthing

1. What is earthing?

• the process in which the instantaneous discharge of the electrical energy takes place by transferring charges directly to the earth through a low resistance wire.

• the process in which the instantaneous discharge of the potential energy takes place by transferring charges directly to the earth through a low resistance wire.

• the process in which the instantaneous discharge of the electrical energy takes place by transferring charges directly to the earth through a high resistance wire.

• the process in which the instantaneous discharge of the electrical energy takes place by transporting charges indirectly to the earth through a low resistance wire.

2. Which object is not an electrical equipment?

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3. Certain safety devices can be used to stop the flow of current if a _________ occurs.

4. What circuit is this?

• Long Circuit

• Short Circuit

• Open Circuit

• Closed Circuit

5. What does each colour wire represent?

• Earth- blue

  Live- brown

  Neutral- yellow and green

• Earth- brown

  Live- blue

  Neutral- yellow and green

• Earth- yellow and green

  Live- brown

  Neutral- blue

• Earth- blue

  Live- yellow and green

  Neutral- brown

6. a safety device that limits the current in circuits as a result it prevents damages to electrical circuits and possible fires.

• Circuit breaker

• Fuse

• Pylon

• Protectors

7. This electrical switch protects a circuit and cuts power when the current levels exceed safe amounts.

• Circuit breaker

• Fuse

• Main switch

• Overload circuit