1. The problem statement, all variables and given/known data there are two identical light bulbs in a torch, a battery at its end and we are asked to connect the bulbs so that there is maximum brightness. 2. Relevant equations 3. The attempt at a solution I simply drew them in parallel because that provides more brightness than parallel according to P=IV ; however, the answer key draws the light bulbs connected to the same battery in separate loops - what is that? (I may not have explained the answer key circuit clearly - if one considers a bow tie, the center of the bow is the battery and the light bulbs are at the two ends of the bow) please explain, thank you!