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

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