Why are heating elements of electric toaster and electric iron made of alloy rather than pure metal?
keshav1077:
because alowys are chaper and long lasting
because pure metal is not high resistance . and high resistive substance gain heat more .
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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......
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Answered by
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Because of following reasons :-
1. Alloy has higher resistivity than pure metal.
2. It has high melting point and does not burn readily or oxidise
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