1. The problem statement, all variables and given/known data We have 6 lightbulbs that are identical attached to a battery, and we need to list them from brightest to dimmest. This is what they look like. 2. Relevant equations None...? 3. The attempt at a solution So, my thinking is that bulbs 6,1,2 are the brightest and the same, because the same amount of current is flowing through them, then I think that 3 is brighter than 4 and 5 which are equal... This is wrong and I dont know why.