What does it mean for a material to have low resistivity?

A material with low resistivity indicates that it readily conducts electric current. Resistivity is a property that quantifies how strongly a given material opposes the flow of electric current. Low resistivity means that the electric current can pass through the material easily.

This characteristic is typically found in good conductors, such as metals like copper and aluminum. These materials allow electrons to move freely, enabling efficient and effective conduction of electricity. In contrast, materials with high resistivity, such as rubber or glass, do not conduct electricity well and are considered insulators.

The other options do not accurately reflect the behavior of materials with low resistivity. Insulators do not allow electric current to flow, contrary to the nature of low-resistivity materials. Materials that block all electrical flow would have very high resistivity. Describing a conductor as having minimal efficiency is misleading since low resistivity suggests it conducts electricity efficiently rather than minimally.