1. The problem statement, all variables and given/known data A current I carried in a conduit as described below. The wire can be assumed to be infinitely long in the positive x-direction. The point P is the radius distance a from the portion of the line that describes a semicircle. Calculate the resulting magnetic field at point P in magnitude and direction. 2. Relevant equations Biot-Savart Law: 3. The attempt at a solution I have calculated the magnetic field caused by the semicircle. I am not quite sure how to calculate the magnetic fields caused by the two infinitely-long wire segments. From my calculations they cancel each other out. Is this correct? Is the magnetic field caused by the semicircle correct? I have linked my answer below: Page 1:http://i.imgur.com/sPh6NiO.jpg Page 2:http://i.imgur.com/YOSuQ95.jpg Page 3:http://i.imgur.com/wL1DCmv.jpg Any help is appreciated.