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in Physics by (51.7k points)

Why does the cord of an electric heater not glow while the heating element does?

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The cord of the electric heater is made of copper. It does not glow because negligible heat is produced in it by the passing current due to its extremely low resistance. The heating element of an electric heater is made of nichrome. It glows because a large amount of heat is produced in it by the passing electric current due to its high resistance.

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