If I have a copper wire and a nichrome wire of the same gauge (e.g. 30 awg) with the same current passing through them. why does the nichrome heat up significantly.
Also, the length of the wires are the same (e.g. 1 foot), the voltage is the same (e.g. 12 volts). The current is being varied by PWM.
Question: What is it about nichrome that causes it to heat up so much?