1. The problem statement, all variables and given/known data Two identical capacitors are connected in parallel and each acquires a charge Q0 when connected to a source of voltage V0. The voltage source is disconnected and then a dielectric (K=3.1) is inserted to fill the space between the plates of one of the capacitors. Assume that the capacitor without the dielectric is the first and the capacitor with the dielectric is second. Determine the charge now on each capacitor and the voltage now across each capacitor. 2. Relevant equations Q = KQ0 V = V0/K 3. The attempt at a solution The answers are wanted in terms of Q0 and V0, but I can't figure out what to do. The only solution I could come up with is Q = 3.1Q0 and V=(1/3.1)V0, both of which are wrong. I am also not sure how to approach the capacitor without the dielectric.