1. The problem statement, all variables and given/known data Calculate magnetic field intensity in point P using Biot-Savart's law. How should the supplying wires be arranged so that they would not influence field in P point? a=0.2m,i=10A 2. Relevant equations Biot Savart's law 3. The attempt at a solution In the attachment. The tutor graded my work for only 3 (that is C), whereas I don't quite understand why. Could anyone tell me what was wrong with my solution? Thanks in advance!