You are given a loop of wire that has the shape of a right triangle and carries a current of 5A and a uniform magnetic field directed to side AB with a magnitude of 1.8 tesla. You are asked to find the magnitude and direction of the magnetic force exerted on each side of the triangle and the magnitude of the net force exerted on the triangle.
When you draw the diagram, you can see that magnetic field and current are parallel to each other and no force is exerted on the edge AB. So magnitude is 0N with no direction.