# A 800 turn coil of effective area $0.05 m^2$ is kept perpendicular to a magnetic field $5\times 10^{5}$ T. When the plane of the coil is rotated by 90° around any of its coplanar axis in 0.1 s, the emf induced in the coil will be :
( D ) $2\times 10^{-3} V$