THE BASIC PRINCIPLES OF PNW ELECTRIC

Take into account the Distinctive situation of the beneficial stage demand q in the origin. To work out the possible due to q in a distance r from your origin relative to some reference of 0 at infinity (recall that we did exactly the same for potential Electrical power), Permit (P = r) and (R = infty), with (dvec l = dvec r = hat r dr) and use (ve