Along with live wire and neutral wire, a third wire is also used in domestic electric wiring. What name is given to this third wire?

Give the symbol of an electric fuse used in circuit diagrams.

State whether the following statements are true or false:

(a) A wire with a green insulation is usually the live wire.

(b) A miniature circuit breaker (MCB) works on the heating effect of current.

List the colours of the three wires in the cable connected to the plug of an electric iron.

What is the electric potential of the neutral wire in a mains supply cable ?