(b) The waveform is cosinusoidal but at a frequency twice the frequency of the field, or 120 Hz. In this case the frequency of
the magnetic field and that of rotation happen to be the same. If they are not, then Eq. (10.32) must be used instead.
(c) Since the amplitude of the emf is directly proportional to the number of turns and the emf above was generated in a single
turn, we can write the emf per turn as