Question

Alloys are used in electrical heating devices rather than pure metals.give one reason

Answer 1

Alloys are used in electrical heating devices rather than pure metals, because of the following reasons:

(i) Alloys have high resistivity as compared to  their constituent metals.
(ii) Alloys do not get oxidise(burn) at high temperatures which helps in           preventing short circuit.

Answer 2

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b) The conductors of electric heating devices such as bread toasters and electric irons are made of alloy because

◾resistivity of an alloy is more than that of metals.

◾It produces large amount of heat and do not burn easily.

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