Question

What is the permittivity constant of a medium whose dielectric constant is K?

Answer 1

Dielectric constant of the medium is the ratio of the electrostatic force of interaction between two given point charges held certain distance apart in vacuum/air to the force of interaction between the same two charges held the same distance apart in the material medium. F₀/Fm=ε/ε₀=K…………………………………………… (from Coloumb’s law)

So permittivity of material,

ε = ε₀ K.