I want help to solve the following question:
Question: As a parallel-plate capacitor with circular plates 27 cm in diameter is being charged, the current density of the displacement current in the region between the plates is uniform and has a magnitude of 26 A/m2.
Part I: Calculate the magnitude B of the magnetic field at a distance r = 75 mm from the axis of symmetry of this region.
Part II: Calculate dE/dt in this region.
I would really appreciate some help. Thanks.