Each quare centimeter of the surface of an infinite p;ane sheet of paper has 2.5 X 10^6 excess electrons. Find the magnitude and direction of the electric field at a point 5 cm from the surface of the sheet, if the sheet is large enough to be treated as an infinite plane. This is an odd problem and the answer is: 226 N/C towards the sheet I understant why it is towards the sheet. I am guessing that since it is an infinite plane the 5 cm distance is unimportant. does this have something to do with the equation: E = 2*sigma / 2*Eo Thanks!