Wire is wound on a square frame, 30 cm by 30 cm, to form a coil of7turns. The frame is mounted
on a horizontal shaft through its center (perpendicular to theplaneof the diagram). The coil is in
clockwise rotation, with a period of 0.060 s. A uniform,horizontal,magnetic field of 0.40 T is
present. At a given instant, the plane of the coil forms a 60°anglewith the horizontal, as shown. In
Fig. 29.4b, at that instant, the emf induced in the coil isclosestto:
A) 13 V
B) 23 V
C) 26 V
D) 3.6 V
E) 2.1 V
I know the answer is A.. but I cant figure out how tosolveit..
Wire is wound on a square frame, 30 cm by 30 cm, to form a coil of7 turns. The frame is mounted on a horizontal shaft through its center (perpendicular to theplane of the diagram). The coil is in clockwise rotation, with a period of 0.060 s. A uniform,horizontal, magnetic field of 0.40 T is present. At a given instant, the plane of the coil forms a 60 degree angle with the horizontal, as shown. In Fig. 29.4b, at that instant, the emf induced in the coil is closestto: A) 13 V B) 23 V C) 26 V D) 3.6 V E) 2.1 V