Consider two copper wires. One has twice the length of the other. How do the resistivities of these two wires compare?
A) The longer wire has twice the resistivity of the shorter wire.
B) Both wires have the same resistivity.
C) The shorter wire has twice the resistivity of the longer wire.
D) The longer wire has four times the resistivity of the shorter wire.

Question

Quizplus · Accepted Answer

Resistivity is a material property and does not depend on the dimensions of the material, such as length or cross-sectional area. Therefore, both wires made of copper will have the same resistivity regardless of their lengths.

Consider Two Copper Wires