Question

Why are heating elements of electric toaster and electric irons made up of an alloyrather than a pure metal?

Answer 1

Answer:

Coils of electric toasters and electric irons made of an alloy rather than a pure metal because the resistivity of an alloy is higher than the pure metal. Also at high temperatures, the alloys do not melt easily

Explanation:

Coils of electric toasters and electric irons made of an alloy rather than a pure metal because the resistivity of an alloy is higher than the pure metal. Also at high temperatures, the alloys do not melt easily

Answer 2

electric irons and toasters are based on joules law of heating

we are aware of the law of conservation of energy that states energy can neither be created nor be destroyed

As electric current through alloys, it resists the flow of charges(alloys have higher resistance compared to metals)  since electric energy cannot be destroyed at this point according to the law and hence changes into heat energy which results in the working of these appliances whereas metals creates no such heat as there is no resistance

remember resistance ∝ temperature

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