Resistance 3 formulas
Area in CM
Joule’s law 3 formulas
Inch to mils
1 inch / 1000 mils
Sq inch to sq mils
1 sq inch / 1 000 000 mils
Sq inch to cmils
4\pi x 1 000 000
Hard drawn copper (hdc) resistivity
1.77 X10^-8 ohm meter
10.66 ohm-CM/ft
Annealed copper resistivity
1.72X10^-8 ohm-meter
10.50 ohm-CM/ft
Aluminum resistivity
2.83X10^-8 ohm-meter
17.10 ohm-CM/ft
Resistance with temperature
Absolute temp
Annealed copper (T)
-234.5 deg C
Hard drawn copper (T)
-242 deg C
Aluminum (T)
-236 deg C
Voltage division theorem
Current division theorem
Wye to delta conversion
Delta to wye conversion
Heat capacity