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A 13.4 cm -diameter wire coil is initially oriented so that its plane is perpendicular to...

A 13.4 cm -diameter wire coil is initially oriented so that its plane is perpendicular to a magnetic field of 0.30 T pointing up. During the course of 0.20 s , the field is changed to one of 0.24 T pointing down.

What is the magnitude of the average induced emf in the coil?

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