"We have just fixed the fact that "e" is a dimensionless quantity - it must be a dimensionless quantity"
Using natural units (hbar=c=1) the elementary charge e is a dimensionless constant (i.e. a pure number) with a value of 0.085424546, It's related to the internal geometry of the elementary particles.
Its square is just the fine structure constant α. Even mass is not a primitive concept but has the dimension of the inverse of a length.
Consequently the "Coulomb force" between two elementary particles has always the simple form ±α/d2
Dear gio06! It won't work like that... So we won't understand each other. I presented you a screenshot of the treatise, which was translated into Russian in 1989. It presents, as I understood it, the "original" record of Maxwell's formula from his treatise in English. And you palm off your reasoning to me - you palm off on me the way you understand it. Show me a screenshot from a treatise in English and let's not discuss your thoughts, but let's discuss Maxwell's original text! Your interpretations of Maxwell are not interesting to me - what matters to me is what Maxwell writes. This is clear ?