Edit: This is my first post. This question isn't related to any homework problems but was inspired by my physics book. I apologize if this is the wrong forum but It seemed the right place based on the other posts. So my physics textbook briefly mentions What I don't understand is: If the paper is put between the charges, those charges would induce a dipole, right? Since there are charges on both sides and "like-charged" which way would the dipole point. The book says the tape is attracted to the paper (which your left to infer creates a force pulling each piece of tape in towards the paper) I just can't visualize how this is possible and I certainly don't understand what the superposition principle has to do with it.