2 Electrostatics

We shall consider in this Section systems of charges with fixed positions. First, let us briefly review how the concept of Electric Field is formalized.

2.1 Coulomb's Law

Coulomb's Law describes the interaction between two charges. It is taken as the customary starting point of Electrostatics, which in turn uses to be the first topic in Electromagnetics.

In terms of forces, Coulomb's Law states that the force upon q' due to q is

Some relevant features are worth to be remarked:

as the force on a unit charge at every point in space.