A parallel plate air filled capacitor having area `40 cm^2` and plate spacing 1.0 mm is charged to a potential difference of 500V. Find (a) the capacitance, (b) the magnitude of the charge on each plate ( c) the stored energy, (d) the electric field between the plates and (e ) the energy density between the plates.

Explanation

`a)10 pF b)18 nC c) 4.4 mu J d) 5.0 times 10^5 V//m e) 1.1 J//m^3`