AP EAMCET Engineering 20 Apr 2019 Shift 2 Paper

A coil in the shape of an equilateral triangle of side 2 cm is suspended from a vertex such that it hangs in a vertical plane between the poles of a permanent magnet producing a horizontal magnetic field of 100 × 10−3 tesla. The magnetic field is parallel to the plane of the coil. For the moment of couple acting on the coil to be 2 √3 × 10−5 Nm , the current to be passed through the coil is