1. The problem statement, all variables and given/known data The radius of the circular loop is R = 21.2 cm and the wire carries the same electric current I = 19.3 A in all three cases. In the first and in the second case the plane of the circle is parallel to the straight wire segments, in the third case the plane of the circle is perpendicular to the straight segments. The straight segments are very long in all three cases in both directions. (i.) What is the size of the magnetic field at the center of the circle in the first case? (ii.) 2nd case (iii.) 3rd case 2. Relevant equations For the first one I used B= (mu*i) / (2*pi*R) for the straight part and B= (mu*i) / (2R) for the loop. Which at the end I added the two together. 3. The attempt at a solution First answer is 7.54×10^(-5) T. I got that correct. The 2nd I'm confused about because of the break in the loop and the 3rd I just don't know what to do with it since the loop is positioned differently. For the second wouldn't it be really similar to the first?