This question was taken from the public examination in my country/region. The answer from the marking scheme is, only statement 1 is correct and the others are wrong. Can anyone explain why the other statements are wrong? 1. The problem statement, all variables and given/known data The following components are connected in series in a circuit in the following order: a charged capacitor C, two uncharged capacitors C1 and C2, an open switch S. ( I couldn't draw it on the computer...) It is given that C1 > C2 and the resistances of the connecting wires are negligible. Which of the following is/are correct after closing the switch S? Statement 1: p.d across C1 < p.d. across C2 Statement 2: The sum of magnitudes of charges on all three capacitors = the original charge (before closing switch) on C Statement 3: Total energy stored in three capacitors = energy stored in C before closing switch 2. Relevant equations Energy stored in capacitor= ½CΔV2 = ½QΔV = ½Q2/C Definition of capacitance: C=Q/ΔV 3. The attempt at a solution (1) was proven to be true with definition of capacitance. Tried to state out heat is released for (3) but it is not true due to R(wire)=0Ω → P=0W as P=I2R.