A 800 turn coil of effective area 0.05 m^2 is kept perpendicular to a magnetic field 5 × 10^-5 T. When the plane of the coil is rotated by 90^°…

A $\displaystyle 800$ turn coil of effective area $\displaystyle 0.05 \mathrm{~m}^2$ is kept perpendicular to a magnetic field $\displaystyle 5 \times 10^{-5} \mathrm{~T}$. When the plane of the coil is rotated by $\displaystyle 90^{\circ}$ around any of its coplanar axis in $\displaystyle 0.1$ s, the emf induced in the coil will be :