A power circuit uses a cable having three different wires.
A power circuit uses a cable having three different wires.

(a) Name the three wires of the cable.

(b) Between which of the two wires should the heating element of an electric geyser be connected?

(c)To which wire should the metal case of the geyser be connected?

(d)To which wire should the switch and fuse be connected?

Solution:

(a) The cable has three wires: a live wire, an earth wire, and a neutral wire.

(b) An electric geyser’s heating element should be attached between the live and neutral wires.

(c) The geyser’s metal box must be linked to the ground wire.

(d) The live wire should be linked to the switch and fuse.