A long wire lies centered along the z-axis. Its cross section is square of side length a (so it stretches from a/2 to +a/2 in the x and y directions). The wire carries a current density - 2 J=Jo (f) : 2) for some constant J;. (a) Sketch the wire and the current density (b) What integral represents the total current I carried by the wire? (Ie. the total amount of current crossing the zy-plane.) (c) Evaluate