REVIEWING OLD TEST and.. dont understand why you use the full distance. 1. The problem statement, all variables and given/known data pretty much theres a home made capacitor made by two pie pans 3.5 cm apart. V is given Q is given, the question asks: calculate the electric field halfway between the plates 2. Relevant equations dV=Ed 3. The attempt at a solution you just simply plug in, but why is distance the full 3.5 cm and not half of that, as youre finding the field at a distance that is halfway between the plates? am i answering my own question and the E field is constant?