If we have two parallel conducting plates ( of surfaces 1msq each), set at a very small distance apart, so that the plates can be considered like infinite plates (no edge effect). Both plates are neutral at first. Now a charge (say +Q) is placed on one of the plates. the other still is neutral What will be the charge on each face of both the plates, and the field at A, B and C, where A is outer side of plate 1, B is middle of plate 1 and 2, and C in outer side of plate 2? My thoughts: i know that if the other plate also had an opposite excess charge then on the outer sides charges are 0 , while inside they would be +Q and -Q. so field would also only exist in the middle. but im a but confused on what it should be incase of only one plate with the excess charge?