1. The problem statement, all variables and given/known data 1)Rank the brightness of the bulbs. 2) What happens to the brightness of the bulbs when A is unscrewed and removed. 3) A is unscrewed, what happens to current through 3,4,5. Red circles are bulbs and the black circles are reference points. 3. The attempt at a solution 1) I know that B=C, but I am stuck on trying to figure out if A is brighter , the same, or less than the brightness of the others. A is in parallel with B and C. Total resistance if each bulb was 1 resistance would equal then 2/3. How is the current being split up? Is it being split evenly at the intersection of the center left?