Question

What should be the characteristic of fuse wire

• A. High melting point ,high specific resistance
• B. Low melting point,high specific resistance
• C. High melting point ,low specific resistance
• D. Low melting point , high specific resistance

Answer 1

The correct option is D

Low melting point , high specific resistance

Explanation

1. The main purpose of the fuse wire is to prevent various electrical home appliances from degradation due to the high load of electric current.
2. This is achieved by melting of fuse wire when a large amount of current is passed through the circuit which can easily be achieved if the material has a low melting point.
3. Due to this fuse wire should have a low melting point and high specific resistance

Hence, option (d) is the correct answer.