8.2 Discussion of the Poynting vector in the above problem This is a continuation of the previous problem. 1. Calculate the Poynting vector at a distance r < rp, and integrate it over the surface of the cylindrical region where it exists in order to find an algebraic expression for the rate at which energy flows into the volume inside r < rp. Write this power as a function of the current that is flowing in the wire, I(t), the potential difference V (t)