Question

Fig below shows two bulbs with resistance 10 ohm with switches and fuse connected to mains through a socket. Choose the correct one.

• A. 1-Neutral, 2 - Earth, 3-Live
• B. 1-Live, 2 - Earth, 3-Neutral
• C. 1-Earth, 2 - Neutral, 3-Live
• D. 1-Neutral, 2 - Live, 3-Earth

Answer 1

The correct option is A 1-Neutral, 2 - Earth, 3-Live

In the given diagram, the marking 1 indicates the neutral wire, marking 2 indicates the earth wire and the marking 3 indicates the live wire.
The LIVE wire is RED OR BROWN. This is connected to a fuse on the live pin. The electric current uses the live wire as its route in.
The NEUTRAL wire is BLUE OR BLACK. This is the route the electric current takes when it exits an appliance; it is for this reason the neutral wire has a voltage close to zero.
The EARTH wire is GREEN OR YELLOW and connected to the earth pin. This is used when the appliance has a metal casing to take any current away if the live wire comes in contact with the casing. The given figure shows the diagrammatic representation of the 3 pin socket.