Since mass and charge behave similarly , so , just like Centre of mass , I define a point centre of charge , that is defined by

$\vec r_{qm} = \frac {\Sigma{q_i \vec r_i}} {\Sigma {q_i}}$
'
Where $\vec r_i$ is a position vector w.r.t. origin .

Now suppose just like momentum ,there is a quantity (we call *charge-momentum*) $q \vec v$ for a system which is changed iff there is an external quantity denoted by $q \vec a$ where $\vec a= \frac{d\vec v}{dt}$ . Let us name this new quantity $ q\vec a$ as *charge-force*.

Now I conjecture(?) , for every *charge force* , there is an equal and opposite *charge force* . 

And that charge-momentum of an isolated system will be conserved . Just like momentum can this be a conserved quantity of universe ?

Does this make any sense ?