Which AWG size of single conductor bare copper wire has the lowest resistance per foot?

The correct choice, which indicates that #00 AWG size of single conductor bare copper wire has the lowest resistance per foot, is based on the characteristics of wire gauge and resistance.

As the American Wire Gauge (AWG) number decreases, the diameter of the wire increases, which leads to a decrease in the resistance of the wire. This is due to the fact that a larger diameter allows more current to pass through with less opposition. Thus, #00 AWG is thicker than #14, #10, and #12 AWG, resulting in the lowest resistance per foot among the available options. Understanding this relationship between wire gauge, diameter, and resistance is crucial for applications in electrical wiring and for ensuring the efficiency and safety of electrical systems.

Choosing the appropriate wire gauge is essential for minimizing power loss and overheating in electrical applications, making the knowledge of wire resistance vital for anyone working in electrical fields.