IMAT 2013 Q55 [AC Generators]

In an AC (alternating current) generator, a coil of wire rotates in a magnetic field.

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Which of the following would change the potential difference measured by the voltmeter in the system above?

  1. Use more turns of wire in the coil
  2. User thicker wire
  3. Change the speed of rotation

A. 3 only
B. 1, 2 and 3
C. 1 and 2 only
D. 2 only
E. 1 and 3 only