Question

The dimensions of specific resistance are

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

Answer 1

Answer: (B)

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