Where ε = "the electric constant" or "vacuum permittivity" or "permittivity of free space" Tutori
How to Calculate how the Coulomb Constant Would Change if the Universe had a Different Permittivity of Free Space | Physics | Study.com
What is the permittivity of free space?
Vacuum permittivity - YouTube
Relative permittivity - Wikipedia
Permittivity of free space/Vacuum permittivity - YouTube
Solved Absolute Permittivity of Vacuum, Eo = 8.85 x 10-12 | Chegg.com
TheⅤalue of the permittivity of vacuum in SI system is 8.85*10 Its value in anew system of units in which : Unit of length4 metre Unit of mass Unit of time2 sec