THE BEST SIDE OF ELECTRIC VELOCITY

Take into account the Unique circumstance of the constructive level demand q at the origin. To determine the likely attributable to q at a length r from the origin relative to the reference of 0 at infinity (remember that we did the identical for probable energy), Permit (P = r) and (R = infty), with (dvec l = dvec r = hat r dr) and use (vec E = fr