计算铜线电阻和电导率(Calculatecopperresistanceand conductivity) Resistance:207K=20*10(7timessquare=200Mohm1Mohm=10(6 thisside) 100kohm=100kohm Theresistivityofcopper(20degreesC)is0.0175Omega mm2/m~~~`,calculatedaccordingtothis ~~~ Theresistivityofcopper(20degreesC)is0.0185Omegamm2/m, thatis,the...
Multiply the cable's length by its material's resistivity. Copper, for instance, has a resistivity of 1.724 x 10^-8 ohm meters at room temperature. If your cable must measure 30,000 meters in length: 30,000 x 1.724 x 10^-8 = 0.0005172 ohm sq. m. Step 3 Divide the answer by your...