Question

What is the dimensional formula of the electric field E?

Options

• \[[MLT^{-3}I^{-1}]\]

• \[[MLT^{-3}I^{-2}]\]

• \[[MLT^{-2}I^{-1}]\]

• \[[ML^2T^{-3}I^{-1}]\]

Answer 1

The dimensional formula of electric field is derived from E = F/q₀. The dimensions of force are \[[LMT^{-2}]\] and the dimensions of charge are \[[IT]\]. Dividing gives \[\frac{[LMT^{-2}]}{[IT]} = [MLT^{-3}I^{-1}]\].