Question

The dimensional formula of electric potential is given by

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

Answer 1

The correct option is A $\left[M{L}^2{T}^{-3}{A}^{-1}\right]$

Electric potential is defined as the work done to move per unit positive charge from one point to another point.

The SI unit of electric potential is $volt\left(V\right)$.

$V=\frac{W}{Q}$

Hence dimension is $\frac{\left[M{L}^2{T}^{-2}\right]}{\left[AT\right]}$

$=\left[M{L}^2{T}^{-3}{A}^{-1}\right]$

Answer-(A)