A conducting loop has an area of 0.065 m2 and is positioned such that a uniform magnetic field is perpendicular to the plane of the loop. When the magnitude of the magnetic field decreases to 0.30 T in 0.087 s, the average induced emf in the loop is 1.2 V. What is the initial value of the magnetic field?
A) 0.42 T
B) 0.75 T
C) 0.87 T
D) 1.2 T
E) 1.9 T
Correct Answer:
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