Electricity

• A

• B

• C

• D

What is the function of a circuit breaker?

• If the current is too large, it disconnects the electricity supply

• If the current is too small, it increases the electricity supply

• It is used to insulate an appliance, preventing electric shock

• It is used to earth the metal case of an appliance

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

• A

• B

• C

• D

What causes a current in an electrical circuit?

• ammeter

• fuse

• resistance

• voltage

• A

• B

• C

• D

What is the unit for electrical resistance?

• ampere

• ohm

• volt

• watt