Question

A fuse wire repeatedly gets burnt when used with a good heater.it is advised to use a fuse wire of a)more length. B)less radius. C)less length. D) more radius

Answer 1

Answer:

A

Explanation:

Answer 2

It is advised to use a fuse wire of more radius. (option d)

• We know that when the radius grows, the cross-section area grows as well.
• Resistance is inversely proportional to the cross-section area.
• Because any wire with a larger radius has lower resistance, it is recommended to use fuse wire with a larger radius if a fuse wire burns repeatedly when used with a good heater.

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