Asked by  | 8th Dec, 2008, 12:09: PM

Expert Answer:

Coils are made of alloys and not of pure metals(put metal is a typing error) because the resistance of an alloy is less affected by the changes in temperaure than a pure metal.Alloys generally used for making resistance coils are manganin and constantan wires.

Answered by  | 8th Dec, 2008, 01:45: PM

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