Question

Dielectric constant or relative permittivity of medium w.r.t vacuum is ratio of what

Answer 1

$\huge\underline\mathfrak\pink{Solution }$

Relative permittivity is also commonly referred to as the dielectric constant, a term which has been deprecated in physics and engineering as well as in chemistry.

By definition, a perfect vacuum has a relative permittivity of exactly 1.

Answer 2

Answer:

The dielectric constant of a medium is the ratio of the permittivity of the medium divided by the permittivity of the vacuum

Explanation:

Dielectric constant (also known as relative permittivity) is the capability of a medium to store electrical energy.

The dielectric constant is generally referred to concerning a reference.

That reference is the permittivity of the vacuum i.e. the dielectric constant of vacuum is taken as 1.

The formula for the same is given below -

$k = \frac{E}{E_{0} }$

Where,

k = dielectric constant

E = permittivity of the medium

E₀ = permittivity of the vacuum

So, the dielectric constant of a medium is the ratio of the permittivity of the medium divided by the permittivity of the vacuum.