HELPING THE OTHERS REALIZE THE ADVANTAGES OF PNW ELECTRIC

Consider the special circumstance of the constructive point charge q for the origin. To calculate the opportunity due to q in a distance r in the origin relative to some reference of 0 at infinity (remember that we did exactly the same for likely Power), Allow (P = r) and (R = infty), with (dvec l = dvec r = hat r dr) and use (vec E = frac kq r^two