The electrostatic force between two charges is a central force. Why?

Electrostatic force between two charges is called central force.Why?

Electrostatic force between two charges is called central force. Why?

Electrostatic forces between two point charges is called central force. Why?

The electrostatic force between two charges distance r apart in vaccum is F. The force between the same charges distance r/2 apart in a medium of dielectric constant 2 is

The electrostatic force between two charges is governed by Coulomb.s law. On which factors does the electrostatic force between two charges depend and how?