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Re: [TCML] Copper wire resistance calculation ?
Ah!
Rho = 0.0000000174 / 39.3700787 // resistivity of copper is default per
meter, convert to inches
area = WD*WD
RESULT = WL / area * Rho
I tried this in relation to the JavaTC demo coil, that gave 27ohms,
though my figure comes out 0.015620142575432545 ?
chris "
Haven't checked your resistivity value but if it's in ohms/cm you
need to convert dimensions to cm. If it's in ohms/in, ohms/m, etc. you
need to convert to the same units as those in which the resistivity is
expressed.
R = rho length / area [all in same units}
Al Cu
rho 238 140 microohm cm [10^-6 ohm cm]
Ed
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