A coil of 200 turns has a cross -sectional area $900 mm^2$ . if carries a current of 2 ampere . The plane of the coil is perpendicular to a uniform magnetic field of $0.5 \;T$ Calculate the magnetic moment of the coil.

Question

$\begin{array}{1 1} 3.6 \times 10^{-2}Am^2 \\ 36 \times 10^{-2}Am^2 \\ 3.6 \times 10^{-2}Am^{-2} \\ 36 \times 10^{-2}Am^{-2} \end{array} $