Think about the Unique situation of a positive place demand q within the origin. To estimate the probable a result of q in a distance r in the origin relative to a reference of 0 at infinity (remember that we did a similar for opportunity Electricity), Permit (P = r) and (R = infty), with (dvec l = dvec r = hat r dr) and use (vec E = frac kq r^2 ha… Read More