Question

The color of the Earth wire is generally:
A) red
B) blue
C) black
D) green

Answer 1

Hint: In the wiring used in plugs, there are usually three kinds of wires. These wires are characterized as active wire, a neutral wire, and ground wire with each wire having a different colour.

Complete step by step answer:
Most live wires use an RGB combination of wire colours i.e. red blue and green colours.
The ground cable in a live feed is usually of green colour. Grounding cables are used to ground the current in the circuit. This means that when the switch of the circuit is off, the grounding wire transfers all the charge in the circuit to the ground to keep the circuit safe from electrical shocks.
Ground cables are usually seen in three-pin plugs where high power requirements appliances are attached. This also ensures that any leakage in the circuit during the usage of the appliance is confined and transferred to the ground.
We won’t find grounding cables in switches of lights and fans since they use a lower amount of power and work at lower voltages. On the other hand, appliances such as microwaves, refrigerators, etc. need a grounding cable for safety purposes.

Hence the correct answer is green or option (D).

Note: Live wires in a cable are usually coloured blue and sometimes yellow. Neutral cables are usually red or brown. The Earth wire is known by its name since the colour of the natural fauna such as plants and trees around us are all green in colour. Different countries might use different colour schemes for these wires.