Answer
The induced emf increases.
Work Step by Step
Since the induced emf is directly proportional to the angular speed, when the angular speed of the coil is increased, the magnitude of the emf (and frequency) also increases.
Physics Technology Update (4th Edition)
by Walker, James S.
Published by
Pearson
ISBN 10:
0-32190-308-0
ISBN 13:
978-0-32190-308-2
Chapter 23 - Magnetic Flux and Faraday's Law of Induction - Conceptual Questions - Page 828: 10
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