Resistivity is an intrinsic property; it does not change with geometry.

The SI unit for resistivity is Ohm-meter ($\Omega \cdot m$).

Resistivity is temperature-dependent for metals, generally increasing with temperature.

Materials with low resistivity are classified as conductors, while those with high resistivity are insulators.

Allows for standardized material comparison independent of geometry.

Essential for calculating the design parameters of electrical components.

Selection of wire materials for power transmission.

Designing heating elements using high-resistivity alloys like Nichrome.

Characterization of semiconductor doping levels.

For most metals, resistivity $\rho_T = \rho_0 [1 + \alpha(T - T_0)]$, where $\alpha$ is the temperature coefficient of resistance.

Option A and C are incorrect because length ($l$) and cross-sectional area ($A$) affect total resistance, not the material property resistivity.

Option D is incorrect because resistivity is fundamentally linked to the material's atomic structure.