1. The problem statement, all variables and given/known data I am having trouble with an E&M conceptual problem. Suppose we have two sheets of infinite charge, one positive and one negative (the positive is left of the negative and they have charge densities given respectively alpha and - alpha.). The problem asks to find the direction and magnitude of the electric field at 4 points in the same line, 2 points outside the sheets of charge, 1 near the positive sheet of charge (from the inside) and 1 in the center of the two infinite sheets of charge. 3. The attempt at a solution Now, i know that the direction of the electric field on the outside will be towards the positive sheet of charge and away from the negative sheet of charge. What about the magnitude? In the center the E-field should be in the -x direction since the y components cancel out but still i cant find the magnitude because there is no distance between them given. Lastly near the positive sheet of charge(from the inside) i think the e-field should be in the -x direction with a lesser magnitude than in the center. I am not sure how to get the magnitudes without the distance separation between them.