In Fig. 30-46, a stiff wire bent into a semicircle of radius a 2.0 cm is rotated at

Chapter 30, Problem 21

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QUESTION:

In Fig. 30-46, a stiff wire bent into a semicircle of radius a 2.0 cm is rotated at constant angular speed 40 rev/s in a uniform 20 mT magnetic field. What are the (a) frequency and (b) amplitude of the emf induced in the loop? BRa Figure 30-46 21.

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QUESTION:

In Fig. 30-46, a stiff wire bent into a semicircle of radius a 2.0 cm is rotated at constant angular speed 40 rev/s in a uniform 20 mT magnetic field. What are the (a) frequency and (b) amplitude of the emf induced in the loop? BRa Figure 30-46 21.

ANSWER:


The frequency of the induced emf can be calculated using the formula: f = B?/2?. Therefore, the frequency of the

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