I have an unusual issue that I need some help with.
I have to create a resistor heater using a 1.6mm PCB and having 1oz copper. The trace will be serpentine across the PCB and it needs to withstand 10A at 24V Max.. The power will be varied at the source, but the heated trace must fit on a 100mm by 60mm PCB which gives a maximum area of 6,000 mm2, assuming 0.5mm gap with a 3mm trace, How do I work out the trace area used without resorting to graphical methods and trial-error?