Question

The dimensional formula of mobility is ________.

• A. $M^{-1}{L}^1{T}^2{A}^1$
• B. $M^1{L}^0{T}^{-2}{A}^{-1}$
• C. $M^1{L}^{-1}{T}^{-2}{A}^{-1}$
• D. $M^{-1}{L}^0{T}^2{A}^1$

Answer 1

Answer: (D)

Mobility $=\frac{Vd}{E}=\frac{\text{ Drift velocity }}{\text{ Electric field }}$
$=\frac{L{T}^{-1}}{M{T}^{-3}{A}^{-1}}=M^{-1}{L}^0{T}^2{A}^1$