1. The problem statement, all variables and given/known data Assume that I = 5.0A. What is the magnetic field at point b in the figure? Give your answer as a vector. 2. Relevant equations Ampere's Law - B = (μ0I)/(2πr) 3. The attempt at a solution I tried plugging the given numbers into Ampere's Law for point b, which gave me B = (4π*10-7) *5.0 I/(2π*0.2 cm), or a result of 1*10-5 T pointing in the positive direction. I assumed this should be doubled as there are two identical fields, giving me 2*10-5 T, but this is wrong. Any help on where I went wrong would be appreciated.