True or False: Do large diameter wires have less resistance?

Large diameter wires indeed have less resistance compared to smaller diameter wires. This principle is rooted in the fundamental characteristics of electrical conductors. When the diameter of a wire increases, the cross-sectional area also increases, which allows more electrons to flow through the conductor with less obstruction.

As electrical resistance is inversely proportional to the cross-sectional area of a conductor, larger wires facilitate greater current flow with reduced resistance. This is particularly important in heavy-duty applications where efficient power transmission is essential. Therefore, when a question asks whether large diameter wires have less resistance, asserting it as true reflects a solid understanding of electrical principles related to wire sizing and its effect on resistance.

Considering the other statements, the notion that resistance could be lower only when cooled does not encompass the general behavior of conductors. While temperature can affect resistance, the size of the wire consistently influences resistance regardless of the thermal conditions. Similarly, although the material does play a critical role in determining overall resistance due to different conductivities (like copper versus aluminum), the statement that larger diameter wires have less resistance holds true across various conductive materials. Hence, affirming that large diameter wires have less resistance is accurate and aligns with the basic laws of electrical conductance.