What two characteristics of a conductor are affected by lay length?

The correct choice focuses on the relationship between lay length and the characteristics of DC resistance and weight in a conductor.

Lay length, which refers to the distance along the conductor where the wires are wound or arranged together, impacts the overall weight due to the amount of material used in the conductor’s construction. A longer lay length generally indicates a larger volume of material, which can increase the weight.

Additionally, the lay length influences the DC resistance of the conductor. Since DC resistance is affected by the overall geometry and length of the conductor's circuit, longer lay lengths typically result in a longer effective length of the conductor, which increases its opposition to current flow.

Both DC resistance and weight considerations are crucial in practical applications, affecting the performance and handling of the conductor in various electrical systems. This understanding ensures that the efficiency and effectiveness of electrical installations can be optimized based on conductor design.