Physics

Physics

Problem

In an a.c. generator, a coil of

N

turns is rotated in a magnetic field of strength,

B

, at an angular frequency,

\omega

, to produce a peak voltage,

V

. If the coil's turns are changed to

2N

, the magnetic field strength is changed to

2B

and the angular frequency is changed to

2\omega

, what will the peak voltage be? a.

\frac{V}{4}

b.

V

c.

4V

d.

8V

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