IS_Unit8_Checkpoint 8.14_E

1(a) Overloading can cause a dangerously large current in a circuit.

• True

• False

1(b) When a short circuit occurs, the resistance of the circuit is very high.

• True

• False

1(c) The current flowing through an appliance under normal operation is higher than the rating of the fuse.

• True

• False

1(d) An earth wire can prevent overheating of a circuit due to large current.

• True

• False

2(a) Study the picture below. What safety precaution should be taken about A?

• Do not use damaged plugs and universal adaptors.

• Never pull on a cable toremove a plug from a mains socket.

• Ask a registered electrician to replace damaged appliances.

• Do not use electrical appliances in wet places.

2(b) Study the picture below. What safety precaution should be taken about B?

• Do not use damaged plugs and universal adaptors.

• Never pull on a cable toremove a plug from a mains socket.

• Ask a registered electrician to replace damaged appliances.

• Do not use electrical appliances in wet places.

2(c) Study the picture below. What safety precaution should be taken about C?

• Do not use damaged plugs and universal adaptors.

• Never pull on a cable toremove a plug from a mains socket.

• Ask a registered electrician to replace damaged appliances.

• Do not use electrical appliances in wet places.

2(d) Study the picture below. What safety precaution should be taken about D?

• Do not use damaged plugs and universal adaptors.

• Never pull on a cable toremove a plug from a mains socket.

• Ask a registered electrician to replace damaged appliances.

• Do not use electrical appliances in wet places.