A coil with a cross-sectional area of 
and 200 turns is placed in a homogeneous magnetic field with a density of 0.06 T. The magnetic field lines are oriented horizontally and perpendicularly to the coil. A 20 cm long rod, which has a body of mass 8 g suspended at the end, is placed in the coil. The coil can rotate around an axis where the axis is horizontal and perpendicular to the magnetic field lines (the axis is routed so that the weight can affect its rotation - see picture). Calculate the current through the coil if the coil is to rest in a horizontal position.
Equal torques of magnetic force and gravitational force
