A parallel-plate air-lled capacitor having area 36 cm2 and plate spacing 0.85 mm is charged to a potential difference of 730 V. Find (a) the capacitance, (b) the magnitude of the charge on each plate, (c) the stored energy, (cl) the electric eld between the plates, (e) the energy density between the plates. (3) Number I I Units (b) Number I I Units nC V