1. The problem statement, all variables and given/known data I have the circuit above. When I have the switch at A, the capacitor C1 is charging at 100μF is at 10V. I then discharge the capacitor by connecting the switch to B. I was asked to calculate the time constant. I thought the capacitors were in parallel but according to the answer, C1 and C2 are in series. I calculated the time constant to be 20 seconds, but the answer was apparently 5 seconds as C1 and C2 were in series. I attempted a similar question as shown below. but they said that the total capacitance was 6.0μF where the capacitors were in parallel for part (i) which I can understand. So who is correct for the first question? 2. Relevant equations T = CR 3. The attempt at a solution Total C = 100 + 100 = 200μF So T = 100x103 x 200x10-6 = 20 seconds.