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Why are coils of electric toasters and e...

Why are coils of electric toasters and electric irons made of an alloy rather than a pure metal ?

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The resistivity of an alloy is higher than the pure metal and it does not corrode easily. Moreover, even at high temperatures, the alloys do not melt readily. Hence, the coils of heating appliances such as electric toasters and electric irons are made of an alloy rather than a pure metal.
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