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

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The coils (or heating elements) to toasters and electric irons are made of an alloy rather than a pure metal because:
(i) the resistivity of an alloy is much higher than that of a pure metal, and
(ii) an alloy does not undergo oxidation (or burn) easily at high temperature, when it is red hot.
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
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  2. Let the resistance of an electrical component remain constant while th...

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  3. Why are coils of electric toasters and electric irons made of an alloy...

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  4. Draw a schematic diagram of a circuit consisting of a battery of three...

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  5. Judge the equivalent resistance when the following are connected in pa...

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  6. An electric lamp of 100 Omega, a toaster of resistance 50 Omega and a ...

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  7. What are the advantages of connecting electrical devices in parallel w...

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  9. What is : (a) the highest (b) the lowest total resistances that can b...

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  11. Compute the heat generated while transferring 96000 coulombs of charge...

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