Question

Which is not the characteristic of a fuse wire?

• A. It has high resistance
• B. It has low melting point
• C. It has low resistance
• D. It is an alloy of lead and tin

Answer 1

The correct option is C

It has low resistance

Characteristics of a fuse wire:

1. Fuse wire has high resistance such that its temperature increases rapidly, it melts when the current flow exceeds certain limits.
2. Fuse wire has a low melting point which melts around ${200}^{°}C$
3. It is a combination of an alloy of lead and tin.
4. Thus, low resistance is not the characteristic of a fuse wire.

Final answer: Hence option C is correct.