capacitor plates have area 5.00 cm^2 and separation 2.00 mm. The plates are in vacuum. The charging current i_C has a constant value of 1.80 mA. At t = 0 the charge on the plates is zero.Calculate the charge on the plates when t=0.500 u_s (mu sub s and find the electric field between the plates when t=0.500 u_s.