Question

A fuse wire is inserted in a?

• A. live wire
• B. in the neutral wire
• C. in the earth wire
• D. may be connected in any line

Answer 1

The correct option is A

live wire

Fuse:

1. A fuse is a safety device in a circuit or an electrical socket.
2. It has a wire component that melts in the event of a circuit fault, cutting off the flow of power.
3. A fuse is essentially a device that cuts power to a malfunctioning system automatically.

Determine the wire where fuse wire is inserted:

We will understand it by the above figure.

1. A fuse consists of a metal strip or wire fuse element that is positioned between two electrical terminals and protected by a non-combustible housing.
2. The fuse element has a modest cross-sectional area in comparison to the circuit elements or conductors. To carry all the current flowing via the protected circuit, fuses are connected in series.
3. Due to the electric current flow, the element's resistance produces heat. The fuse element's size and design are chosen to prevent it from overheating from the heat generated by a typical current flowing through the circuit. If the electric current is too high, the element heats up and melts either directly or a soldered joint inside the device.
4. The fuse wire is always connected to the live wire of the electrical circuit because if the fuse were accidentally connected to the neutral wire, the appliance would still be connected to the high potential point of the power supply through the live wire when the fuse burned due to an excessive flow of electric current.
5. As a result of coming into contact with the live wire through the appliance, if a person touches it, there is a potential that he or she will receive an electric shock.
6. Therefore, a fuse wire is inserted into a live wire.

Hence, option $\mathrm{A}$ is the correct answer.