Which of one of the following statements is not correct regarding potential due to a point charge?

Concept:

The electric potential due to a point charge is given by:

\(V = {1\over 4\pi ϵ_o}{Q\over r}\)

where, V = Electrical potential 

Q = Point charge

d = Distance from charge

ϵ_o = Permittivity of free space

The relationship between potential and electric field intensity is:

\(E={V\over d}\)

Explanation:

From the above expressions, the electric potential is:

1. It is directly proportional to the magnitude of the charge.
2. It is inversely proportional to the distance from the charge.
3. It is independent of the relative permittivity of the medium in which the charge is placed but inversely proportional to the permittivity of free space.
4. It is directly proportional to the electric field intensity.