A circular loop (area = 0.20 m2) turns in a uniform magnetic field with B = 0.13 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is (?) rads and is decreasing at the rate of 0.50 rad/s, what is the magnitude of the emf induced in the loop?
A. zero
B. 13 mV
C. 26 mV
D. 20 mV
E. 18 mV
Answer: A
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