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Q. The dimensional formula of electric potential is

J & K CETJ & K CET 2013Physical World, Units and Measurements

Solution:

Electric potential,
$V=\frac{W}{q}=\frac{\left[ML^{2}T^{-2}\right]}{\left[AT\right]}$
$=\left[ML^{2}T^{-3}A^{-1}\right]$