Question

Two copper wires can have different resistivity if they have different ______.

Options

• lengths

• temperatures

Answer 1

Two copper wires can have different resistivity if they have different temperatures.

Explanation:

Resistivity is an intrinsic property of the material itself and is independent of the wire’s physical dimensions (like length or cross-sectional area). For metals like copper, resistivity increases as the temperature rises. Therefore, two copper wires will only exhibit different resistivity if they are at different temperatures.