A coil having \( 100 \) turns, area of \( 5 \times 10^{-3} \, \text{m}^2 \), carrying current of \( 1 \, \text{mA} \) is placed in uniform magnetic field of \( 0.20 \, \text{T} \) such a way that plane of coil is perpendicular to the magnetic field. The work done in turning the coil through \( 90^\circ \) is ________ \( \mu \text{J} \).
