Question

The constant $k$ in Coulombs law depends on

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

Answer 1

Answer: (D)

The value of $k=\frac{1}{4\pi {\epsilon }_0}=9\times 10^{9}N{m}^2{C}^{-2}$
where ${\epsilon }_0$ is permittivity of free space