Why an electric heater does not glow like an electric bulb?
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Also question is, why does cord of an electric heater not glow?
Ans: The heating element of the heater is made up of alloy which has very high resistance so when current flows through the heating element, it becomes too hot and glows red. But the resistance of cord which is usually of copper or aluminium is very law so it does not glow.
Beside above, why would an electric heater stop working? CAUSE: The most common cause for electric heater not working is blown fuses. If it is fuses or tripped, then what you can do is that you can replace the fuse or reset the circuit breakers if required. Now plug the appliance back in and switch it on. See if the problem has been resolved.
Consequently, why does the connecting rod of an electric heater not glow while heating element does?
Because heating element and connecting are made from different elements. Heating element is generally made from Nichrome and connecting rod is from copper. Nichrome has higher electrical resistivity than copper.so the heating element of heater glows but connecting rod does not.
Why do the wires connecting an electric heater to the mains?
The wire connecting the heating element to the power supply have different properties than the heating element. The connecting wire is made up of copper which has very low resistance (high conducting, metals are good conductors) which allows the current to flow through it very easily without heating it up.