AC Generator: a Rectangular Coil Having N Turns and Measuring

question 5

Multiple Choice

AC generator: A rectangular coil having N turns and measuring 15 cm by 25 cm is rotating in a uniform 1.6-T magnetic field with a frequency of 75 Hz. The rotation axis is perpendicular to the direction of the field. If the coil develops a sinusoidal emf of maximum value 56.9 V, what is the value of N?

• A) 2
• B) 4
• C) 6
• D) 8
• E) 10

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