The question is based on the image below but is not the same. The question is as follows: Assume the capacitor is charged, so that there is a charge q on the top plate and a charge -q on the bottom plate. Determine the magnitude of the potential difference across the k2 region, answering in units of q. *There is a typo in the book; k1 is the lower half of the gap. Answer in units of 109 V/C (Volt per Coulomb because this factor is multiplied by q, so the Coulomb cancels) My attempt: I used the parallel capacitor equation E = (Q / A) / 2(epsilon)(k) to find the electric fields for both plates. I added up the two fields and got -5.42*10^11 for the total electric field between the two plates. Then I used the equation E = V / d, plugging in my electric field and using 4.62 * 10^-3 for d and got a change in V of -1.25 * 10^9. I don't know where I went wrong can someone please help me find my mistake? Thanks.