Question

The constant $k$ in Coulomb's law depends upon

• A. nature of medium
• B. system of units
• C. intensity of charge
• D. both (a) and (b)

Answer 1

The correct option is A nature of medium

The value of $k=\frac{1}{4\pi {\epsilon }_0}=8.854\times {10}^{-12}{C}^2{N}^{-1}{m}^{-2}$
where ${\epsilon }_0$ is permittivity of free space