Question: An infinitely long and straight, parallel to the x axis filament carries a current I = 25 A, in the positive direction of the axis of x. A circular of 20 turns of winding conductor, carrying a current I. The winding is located in the xy plane with its center at a perpendicular distance of the filament, d = 2 m.
Part A: If the magnetic field in the center of the winding is zero then how much is that the magnitude and direction of the winding current flows?
I want help to find how much is that the magnitude and direction of the winding current flows.