Physics · Current Electricity

Two resistors A (3 Ω) and B (6 Ω) are connected in parallel. This combination is connected in series to two other resistors C (3 Ω) and D (6 Ω) and a 5.5 V battery of negligible internal resistance. If PB and PD are the rates of energy dissipated in resistors B and D respectively, then the ratio (PB / PD) is: