The AC generator described in Figure Q22.6 (and in Section 22.1) uses a rotating coil to produce

Question:

The AC generator described in Figure Q22.6 (and in Section 22.1) uses a rotating coil to produce an AC voltage through electromagnetic induction as described by Faraday’s law.
(a) Explain how this approach can produce a voltage whose frequency is equal to the rotation frequency of the shaft.
(b) Explain how you could modify the rotating coil so that the frequency of the AC voltage is twice the rotation frequency of the shaft.
(c) Explain how you could modify the magnets in Figure Q22.6 so that the frequency of the AC voltage is four times the rotation frequency of the shaft.

Figure Q22.6