1. The problem statement, all variables and given/known data The electric potential for some charge distribution is given by the function V(x,y,z) = 1000z (Volts), for -10cm <= z <= +10cm, and zero otherwise (it does not depend on the x and y coordinates). Find the electric field corresponding to the given electric potential. Draw some electric field lines. What charge distribution can create such an electric field? Give all possible numerical information about the charge distribution that you can find out from the given data. I have no clue about this one. i know that E = σ/2ε0. though im not sure how it applies to this question.