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Consumer Electronics
Electronics Engineering
Elements and Compounds

Which elements conducts electricity the best and why isn't it in common use for electrical wires?


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September 25, 2014 12:40PM

Answer We talk about conductivity per "mass" or per volume. The best conductivity per volume is silver, with copper a close second. You can see why silver is rarely used. The best BY FAR conductivity per mass is aluminum, and that is why aluminum is used for all transmission lines that bring power to your house. Since aluminum is relatively weak, steel cable is used for reinforcement, and since the aluminum has low density, it is larger for the same weight, so the cable is bigger around. It is also cheaper than copper. Where conductivity per volume ("bulk conductivity") is an issue, such as windings of motors, copper seems the best choice. I WANTED TO KNOW WHAT ELEMENTS MADE WIRES YA TROT