Question

The dimensions of specific resistance are

• A. $[M L^2T^{-2}A^{-1}]$
• B. $[M L^3T^{-3}A^{-2}]$
• C. $[M L^3T^{-2}A^{-1}]$
• D. $[M L^2T^{-2}A^{-2}]$

Answer 1

Answer: (B)

Specific resistance $\rho = \frac{RA}{l}$
$ = \left[ML^{2} T^{-3} A^{-2}\right]\left[L\right]$
$= \left[ML^{3} T^{-3} A^{-2}\right]$