Actuwly the coil heats up because its a coil, the electricity has to travel through it to complete the circit and because of the coiling it heats up more than the strait parts that is why when you dry burn and look at the coil head only the coil gets red hot the rest of the head does not. If it werea strait piece of wire the whole thing would heat up evenly but its not so the coil heats up faster than the strait parts because its causing the most resistance.
Fact is if you take a strait piece of wire and ring voltage though it the whole thing will heat up evenly until it burns out but if you put a coil in the middle of the wire the coil will heat up red hot leaving the strait parts relitivly cool compared to the red hot coil in the middle. This is because the coil offers a high load of resistance compared to the strait wire thus generating heat. The electricity has more wire to travel through in the same distance as it would with a strait wire thats why the extra heat is generated only there. Yes heat it generated everywhere but extra heat there because there is more wire to travel though in the given distance with a coil in the way
However the strait parts orlegs do heat up. But imho it is completely insignificant. Unless there is a defect in the coil like a strech or kingk then it may heat up in undesirable spots
Fact is if you take a strait piece of wire and ring voltage though it the whole thing will heat up evenly until it burns out but if you put a coil in the middle of the wire the coil will heat up red hot leaving the strait parts relitivly cool compared to the red hot coil in the middle. This is because the coil offers a high load of resistance compared to the strait wire thus generating heat. The electricity has more wire to travel through in the same distance as it would with a strait wire thats why the extra heat is generated only there. Yes heat it generated everywhere but extra heat there because there is more wire to travel though in the given distance with a coil in the way
However the strait parts orlegs do heat up. But imho it is completely insignificant. Unless there is a defect in the coil like a strech or kingk then it may heat up in undesirable spots
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