DETAILS, FICTION AND RAZOR

Look at the special situation of a good level demand q within the origin. To determine the likely caused by q in a length r from the origin relative to a reference of 0 at infinity (remember that we did a similar for opportunity Power), Allow (P = r) and (R = infty), with (dvec l = dvec r = hat r dr) and use (vec E = frac kq r^two hat r ). Once we