1. The problem statement, all variables and given/known data Which statements are correct/incorrect for two oppositely charged, isolated parallel plates: (C=capacitance, U=stored energy, +Q and -Q = charge on the plates). Correct Incorrect When the distance is doubled, U is unchanged. Correct Incorrect Inserting a dielectric increases Q. Correct Incorrect When the distance is doubled, C is halved Correct Incorrect Increasing the distance, decreases the E field. Correct Incorrect Inserting a dielectric increases C. Correct Incorrect When the distance is halved, Q is halved. Correct Incorrect Inserting a dielectric decreases U. 2. Relevant equations Below in my answers 3. The attempt at a solution Now I don't know if I am misunderstanding the concept of Dielectrics or what, but this is what I believe: A - I thought that this is false because PE = 1/2QV. And I know that the potential difference is dependant on r. B - False because inserting a dielectric will not increase a charge. C - True because C = (A/d)*constant D - True because E = -Change in V/Change in X E - True because the formula includes multiplying by a constant k. F - False because Q = V*A*constant/d. Halving distance doubles Q G - False. A dielectric is only an insualtor that can allow the capacitance to increase.