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Question

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


A

They are cheap

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B

They have low melting point

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C

Fe, Ni are costly

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D

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 if a large current passes through the circuit it will generate heat that is enough to melt fuse and break the circuit, saving the appliances.


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