1. The problem statement, all variables and given/known data Four electric currents, equal in magnitude are arranged at the corners of a square as shown in the figure. [URL]https://s1.lite.msu.edu/enc/67/e803dcaee3e6ac1f07ecaa6e11a858c03f3cec0d55e5f69c7b6812a56efcefd2bec6dcdf49316634dcd828e6638a241c37cd7050f1e6c26ba36058828003ed63a62e225561265ad8020044d0aa9e083825ab692fb01f84a9.gif[/URL] Two currents go into the page, and two are pointing out of the page. Point a is at the center of the square, and points b and c are in the middle of two of the sides. What is the direction of the magnetic field at points a, b, and c? 3. The attempt at a solution I am really clueless, but I would guess a is zero. b and c point north.