What should be the characteristic of a fuse wire?

High melting point, high specific resistance

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Low melting point, low specific resistance

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High melting point, low specific resistance

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Low melting point, high specific resistance

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Solution

The correct option is D
Low melting point, high specific resistance

A fuse wire is supposed to melt immediately when there is a flow of dangerously high amount of current through the circuit, in order to prevent further damage and that is possible only if the wire's melting point is low and resistivity is high.

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