Electrical resistivity, ρ\rhoρ, is a material property defined by the equation:
ρ=RAL \rho = \frac{RA}{L} ρ=LRAwhere R R\,R is the electrical resistance of a specimen of the material, A A\,A is its cross-sectional area, and L L\,L is its length.
What is the correct representation of the SI base units for electrical resistivity?
kg m2s−3A−2\text{kg m}^2 \text{s}^{-3} \text{A}^{-2}kg m2s−3A−2
kg m3s−2A−2\text{kg m}^3 \text{s}^{-2} \text{A}^{-2}kg m3s−2A−2
kg m3s−3A−2\text{kg m}^3 \text{s}^{-3} \text{A}^{-2}kg m3s−3A−2
kg m2s−3A−1\text{kg m}^2 \text{s}^{-3} \text{A}^{-1}kg m2s−3A−1
