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A circular loop in the plane of the paper lies in a 0.38 T magnetic field...

A circular loop in the plane of the paper lies in a 0.38 T magnetic field pointing into the paper.

Part A: If the loop's diameter changes from 19.4 cm to 5.8 cm in 0.49 s , what is the direction of the induced current?

Part B: What is the magnitude of the average induced emf?

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