Changing orientation and induced emf The surface of the coil of wire discus...

Changing orientation and induced emf

The surface of the coil of wire discussed in Problem 25 is initially oriented perpendicular to the field, as shown in Figure Q18.2. (a) Estimate the magnitude of the average induced emf if the coil is rotated 90° in 0.050 s in the 0.40-T field. The coil’s surface is now parallel to the field. (b) Determine the magnitude of the average induced emf if the coil is rotated another 90° in 0.020 s.