Which 2 AWG conductor has a lower resistance?

Copper has a lower resistance compared to aluminum, iron, and silver when considering practical applications for electrical conductivity. Material conductivity is a key factor; copper is well-known for its excellent conductivity, making it a preferred choice for electrical wiring applications.

The electrical resistance of a conductor is influenced not only by the material's properties but also by its cross-sectional area and length. For a specific size, such as a 2 AWG conductor, copper's intrinsic properties allow it to conduct electrical current more efficiently, resulting in lower resistance. This lower resistance translates to less power loss in the form of heat during operation, critically important in maintaining efficiency and safety in electrical systems.

While silver is the most conductive material of all, it is often less practical for general electrical conductor applications due to its cost and susceptibility to tarnishing. Iron, on the other hand, exhibits much higher resistance compared to both copper and aluminum, making it unsuitable for electrical conductor use. Thus, in this context, copper stands out as the conductor with the lower resistance among the options provided.