This question was in our textbook: 'Why does the heating cord of an electric heater not glow while the heating element does glow when electric current passes through it?'.
All I have been taught is alloys do not oxidize readily, hence they are used in common heating appliances like toasters and heaters. I understand that the heating element is made of an alloy which dissipates huge heat due to higher resistance and hence a part of the heat energy transforms to light energy in the heating element. But I am very much confused about the heating cord.
Can anyone please explain me about the heating cord-What is its purpose in an electric heater? And what material is it made of?Any help is appreciated. Please feel free to correct any mistakes.