I am not a real Sparky, but you are right, resistance goes up as temperature goes up.I'm not an EE, but I'm pretty sure that the resistance of a light bulb changes a lot due to the extreme temperature change of the filament. Perhaps someone more sparky will weigh in...
So what are you suggesting? 4A will burn something up? I thought that was what fuses were for. What size resistor do you suggest?12V / 3Ohms = 4A
P = V*A = 48W
That's one big a$s resistor burned out spot.
: Well, obviously, if that's purely a resistor, it's something new-ish. Certainly isn't 100% ceramic, huh? And keep in mind that this thing is like a 50W bulb. (well, 60W since you don't see 50W ones...) and will get equally warm. BUT, since sarcasm is directed at me indicating that my presence is unwanted, I'll bow out of this thread.If this 50watt 6 ohm resistor is as big as a coke can, those must be some 1 inch diameter cables running out of it.
Chris,But, yes, a 48W 3Ohm "resistor" would more commonly called a resistive load, as it would be bigger than a Coke can.