Question

All the switches of electric appliances are put:
A. In the neutral wire
B. In the live wire
C. In the main wire
D. All

Answer 1

Hint: To help control and monitor voltage, neutral wires transport currents back to the power source. Its general aim is to act as a road to energy return. Electrical pathways designed to bear fault currents when a power abnormality occurs are ground wires.
- The live cable is directly connected to the power supply company's generators. It holds high voltage current.
- The main power feeder wires are the wires linking the head of the weather service to the building.

Complete answer:
Electrical appliances in a house are connected in parallel as: (i) As the resistance in parallel becomes minimal, each appliance gets maximum voltage. (ii) The operation of other appliances is not compromised if the fuse of one device fails.
- Switches are not connected to neutral wire because if the switches are wired to the neutral cable, there will be no current running into the appliance and it will thus not work.
- A switch is always attached to the live wire in the electrical circuit so that when it is turned off the socket/appliance is not live. The thicker the wire, the greater the current required to melt it and the higher the fuse' rating.'
- If we connect live with a wire with neutral, wire resistance is negligible such that short circuit is induced. The earth wire causes a strong current to pass between the live and earth wires as a failure happens where the live wire attaches to the case. This overheats the fuse that melts the circuit and splits.
Hence, we can see that all the switches of electric appliances are put in the live wire.

So, the correct answer is “Option B”.

Note:
If we link the circuit wires on an outlet to the wrong terminals, the outlet will still operate, but there will be backward polarity. For starters, as this occurs, a lamp will have its bulb socket sleeve energised instead of the little tab inside the socket.
If we connect live with a wire with neutral, wire resistance is negligible such that short circuit is induced.