Q11 of 72 Page 12

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

The coils (or heating elements) of toasters and electric irons are made of an alloy rather than a pure metal due to the following two reasons:

1) The resistivity of an alloy is much higher than that of a pure metal, and


2) An alloy does not undergo oxidation easily even at high temperature

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