my reply2 The concept about the voltage not being able to change quickly is appreciated by the students and by me as well. Where I get stuck is when I tell them that since the potential is V on one plate then the other plate instantaneously assumes a potential V because the voltage across the capacitor cannot change. I referred to a few text books and also some internet sites and have put together an understanding of the action and am mailing to your email id since I do not know how to send via the forum's mail method.... Please give me your comments. Thanks Sridhar