1. The problem statement, all variables and given/known data Which of these diagrams represent the same circuit? 2. Relevant equations 3. The attempt at a solution I thought it was A and D because it seems to me that in both cases the current is going splitting into two different paths. Also it seems to me that in A and D the potential difference is the same. But that's incorrect and I can't understand why. A and B seems wrong to me because the capacitor is at a different potential. A and C seems wrong because the resistor blocks the capacitor in C. B and C seems incorrect because of the resistor blocking the capacitor in C but not in B. B and D seems incorrect because the capacitor at B looks like it is at a higher potential. Basically I've ruled out C. The resistor that blocks the battery makes it unique.