An oddly shaped solenoid has a triangular crosssection instead of the usual circular one. This solenoid includes N=30 windings of a current-carrying wire and the sides ofthe equilateral triangular cross-section have a length of 30 mm. You can assume that the diameter of the wire and the longitudinal length ofthe solenoid are negligible. This solenoid is exposed to a uniform external field of || = 0.4 teslas. This 1737 field is sometimes perpendicular to the cross-section of the solenoid and sometimes parallel to it. This means that the solenoid will sometimes experience a torque. When the B field is slightly off being parallel to the plane ofthe solenoid (with an angle of 10 degrees}, the torque is measured to be 7.0 x 10'3 Nm. Determine the current flowing in this solenoid