Question

Two wires of different materials are given such that wire A has a thickness of 2 mm and melting
point of 360°С. And wire B has a thickness of 4 mm and melting point of 800°C. Which of them is
best suited for fuse wire

Answer 1

Answer:

540 degree

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Answer 2

Answer:

WIRE A

Explanation:

A FUSE WIRE IS BEST SUITED WHEN IT HAS HIGH RESISTANCE AND LOW MELTING POINT.

As the fuse is more than just an electrical contact, it should connect the circuit while also melting if the current exceeds the limit. As the result, the conductor with low melting points are used as fuses.

The resistance of a conductor is proportional to its length and inversely proportional to its cross-sectional area. As a result, if the fuse wires are thick, the larger cross-section reduces the resistance across the fuse wire. As a result, even if a high current flows through the fuse, it does not blow. Because it merely serves as a standard electric contact in the circuit or wiring.