Question

The unit of permittivity of free space $\left({ϵ}_0\right)$ is:

• A. $C{N}^{-1}-m^{-1}$
• B. $N{m}^{-2}{C}^{-2}$
• C. $C^2{N}^{-2}{m}^{-2}$
• D. $C^2{N}^{-1}{m}^{-2}$

Answer 1

The correct option is D $C^2{N}^{-1}{m}^{-2}$

SI unit of permittivity of free space $\left({ϵ}_0\right)$ is $C^2{N}^{-1}{m}^{-2}$ because
${ϵ}_0=\frac{q^2}{F{D}^2}$