12. (25 pts total) A square loop of wire with edge length l = 100 cm is placed within a uniform magnetic eld, B = + L00 T 2, and allowed to pivot along one edge, as shown below A mass with m = 50 g is hung from the edge of the loop opposite the pivot (A) (10 pts) If we want to pass a current through the loop of wire to balance the torque exerted by the mass, what should the direction of the current be? Refer to the diagram for the denitions of CW and CCW. (B) (15 pts) What is the magnitude of the current that we would need to pass through the loop in order for the loop to be stable at an angle of B = 45 degrees