Household Circuits

The diagram shows the interior of a three-pin plug of an electrical appliance. Label wire X.

The diagram shows the interior of a three-pin plug of an electrical appliance. Label wire Y.

The diagram shows the interior of a three-pin plug of an electrical appliance. Label wire Z.

Which wire(s) connect(s) the electrical appliance to the mains supply?

• Wire X only

• Wire Z only

• Wires X and Z only

• Wires Y and Z only

Which of the following statements about a domestic circuit is/are correct?

(1) All the sockets in the circuit are connected in parallel.

(2) Each appliance in the circuit can be switched on and off independently.

(3) If an appliance in the circuit is broken down, the other appliances can still work properly.

• (1) only

• (1) and (2) only

• (2) and (3) only

• (1), (2) and (3)