A parallel plate capacitor with air between its plates having palte area of `6xx10^(-3)m^(2)` and separation between them 3 mm is connected to a 100 V supply. Calculate charge on each plate of the capacitor. Explain what would happen when a 3 mm thick mica sheet (dielectric constant=6) is inserted between the plates, (i) while the voltage supply remains conected, (ii) after the supply is disconnected.