(please check attachment) Calculate the effective resistance between A and F Initially, I thought that the first resistance is ignored and the current takes the lower path. Then 2Ω and 2Ω are in parallel giving an effective resistance of 1Ω. However, it could also be that all three are in parallel and thus give an effective resistance of 2/3 Ω. If the upper and lower loops are ignored, the resistance is 6Ω!! What is the correct answer??