So if I know a 30 gauge wire's resistance at 1 meter, how can I figure out the resistance of a 29 gauge wire at 1 meter long of the same material? Or 5 gauge, or any other gauge? I need a formula, not a chart. Working with multiple materials, and I know the resistance of them at different gauges, but need to find out how to get the resistance per meter of varying gauge sizes using math.
Electronic – Formula to find out the resistance per meter of a specific gauge of wire if I already know the resistance of a different gauge of wire per meter
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Best Answer
The equation to find resistance in a wire is:
R=(p*L)/AWhere
p = Resistivity of material,L = length of wireandA = area of cross sectionAssuming DC, and that the cross section is uniform.