A circular conducting loop with radius 3.40 cm is placed in a uniform magnetic field of 0.880

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A circular conducting loop with radius 3.40 cm is placed in a uniform magnetic field of 0.880 T with the plane of the loop perpendicular to the magnetic field, as shown. The loop is rotated 180° about the axis in 0.222 s. 

(a) As the loop begins to rotate, does the induced current flow clockwise or counterclockwise? 

(b) What is the average induced emf in the loop during this rotation?

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