In an AC (alternating current) generator, a coil of wire rotates in a magnetic field.
Which of the following would change the potential difference measured by the voltmeter in the system above?
- Use more turns of wire in the coil
- User thicker wire
- 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