Final answer:
For a 10 AWG copper conductor, the resistance values are indeed different for solid versus stranded wire; however, this is due to their physical differences. Understanding Ohm's law is integral for calculating resistance, which varies with the length and type of conductor. This is key when discussing the resistance of power transmission lines or different conductor gauges.
Step-by-step explanation:
The question is concerning the National Electrical Code (NEC) and specifically about Table 8, which contains information on conductor properties such as resistance. For a solid and stranded 10 AWG copper conductor, there would indeed be different resistance values listed due to differences in their physical structure even though they have the same gauge. The resistance for a solid wire is slightly lower than that of a stranded wire of the same gauge, simply because the stranded wire has a slightly larger overall diameter due to the small gaps between the strands.
To address the provided information about various electrical scenarios, understanding Ohm's law, which states that resistance (R) equals voltage (V) divided by current (I) or R = V/I, is crucial. As such, when we talk about resistance over a thousand feet or per kilometer, we are considering this law in relation to the length of the conductor. The resistance changes with the length of the wire, and this is clearly demonstrated in the example of a power transmission line resistance or when comparing the resistance of different gauges and types of copper wire. Ohm's law is applicable to ohmic materials, which include conductors like copper, where the resistance remains essentially the same for a wide range of voltage and current.