A Circular Coil Has 275 Turns and a Radius of 0.045

A circular coil has 275 turns and a radius of 0.045 m. The coil is used as an ac generator by rotating it in a 0.500 T magnetic field, as shown in the figure. At what angular speed should the coil be rotated so that the maximum emf is 175 V?

A) 28 rad/s
B) 50 rad/s
C) 130 rad/s
D) 200 rad/s
E) 490 rad/s

Correct Answer:

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