Why copper and aluminium are used over tungsten, iron or nickel to make fuses.

They are cheap

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They have low melting point

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Fe, Ni are costly

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Cu is a bad conductor

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Solution

The correct option is B They have low melting point
Low melting point materials are used in fuses because as large currents pass through the circuit they will generate heat that is enough to melt fuse and break the circuit, saving the appliances.

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