I looked in my physics book and they use the formula E=a/2e0 when there is only one nonconducting sheet. The picture they show is a cylinder which is the Gaussian surface going through the sheet with both ends outside of the sheet. When they use the formula E=a/e0 half of the Gaussian surface...
Homework Statement
how do I know which equation to use for electric field? E=a/2e0 or E=a/e0 when a = surface charge density.
Homework Equations
The Attempt at a Solution