1. The problem statement, all variables and given/known data If i have a sketch of field lines, and equipotential lines which i completed in a lab, and i know the voltage,V, of points located at intervals ,L, how do i find the electric field for the whole plane? 2. Relevant equations lEl = DeltaV/DeltaL 3. The attempt at a solution I can find the electric field magnitude for each individual point that i plotted because my distance L was 1cm(constant) and i recorded the voltage at each point.