A Rectangular Coil Of $N$ Turns, Length $L = 25 \mathrm {~cm}$

question 342

Multiple Choice

A rectangular coil of $N$ turns, length $L = 25 \mathrm {~cm}$ , and width $w = 15 \mathrm {~cm}$ , as shown in the figure, is rotating in a magnetic field of $1.6 \mathrm {~T}$ with a frequency of $75 \mathrm {~Hz}$ . If the coil develops a maximum emf $56.9 \mathrm {~V}$ , what is the value of $N$ ?

• A) 4
• B) 6
• C) 10
• D) 2
• E) 8

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