Question

Identify the following wires used in a household circuit:
(i) The wire is also called the phase wire.
(ii) The wire is connected to the top terminal of a three-pin socket.

Answer 1

Hint:(1): The live wire is attached straight to the generators of the current supply firm.
(2): Earth wire: The Earth wire naturally brings no current. It is a protection wire and joins the metal case of the device to the Earth. But, if something in the machine works wrong or wired wrongly, the Earth wire may also bring the same current as the live wire.

Complete step by step answer:
Live wire means a wire in which the power is running at a particular time; phase wires are always called live wires because phase wires are regularly able to supply any load which is continuing to come. Earthing is used to defend you from an electric blower. It does this by giving a path for a fault current to flow to Earth. It also creates the protective device to switch off the electric current to the circuit that has the fault.
Therefore, the phase wire is used in the household circuit and it is connected to the top terminal of the three-pin socket.

Note:Electric current moves from high potential to low potential. Live wire indicates high potential (It is also called as phase wire), and the neutral wire is low potential or zero potential. Earth wire is also zero potential. Earth wire is connected to the body of the equipment to stop electrical shock to the person operating with the equipment. It is needed to join the neutral wire to the earth cavity to prevent excess voltage (Resultant voltage due to the different loads on 3 phases, if neutral is not earthed at the transformer LT side (Secondary winding side), Resultant voltage flows in the opposite direction, and causes electrical equipment to get burned.