A coil of 1000 turns encloses an area of 25 cm2. It is rotated in 0.010 s from a position where its plane is perpendicular to Earth's magnetic field to one where its plane is parallel to the field. If the strength of the field is 6.0×10−5 T, what is the average emf induced in the coil? 5 mV 15 mV 10 mV 20 mV