A 250-turns recantagular coil of length 2.1 cm and width 1.25 cm carries a current of `
Channel: Doubtnut
Date: 2020-01-19

A 250-turns recantagular coil of length 2.1 cm and width 1.25 cm carries a current of `85 muA` and subjected to magnetic field of strength `0.85 T`. Work done for rotating the coil by `180^(@)` against the torque is