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Why are used alloy in heating device rather than pure metal |
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Answer» It do not oxidised readily to high temp. Coils of electric toasters and electric irons are made of an alloy due to the followingreasons:i. Resistivity of an alloy is generally higher than that of pure metal.ii. At high temperature, an alloy does not oxidize readily. Hence, coil of an alloy has longer life. ?? |
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