A parallel - plate capacitor has circular plates and no dielectric between the plates. Each plate has a radius equal to 2.3 cm and the plates are separated by 1.1 mm. Charge is flowing onto the upper plate (and off of the lower plate) at a rate of 5.0 A. (a) Find the rate of change of the electric field strength in the region between the plates. (b) Compute the displacement current in the region between the plates and show that it equals 5.0 A. (c) Find the magnetic field strength between the plates at a distance r from the axis through the centers of both plates.