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A circular wire loop with a radius of 0.49 m is located in an external magnetic field of strength +0.17 T that is perpendicular to the plane of the...

A circular wire loop with a radius of 0.49 m
is located in an external magnetic field of
strength +0.17 T that is perpendicular to the
plane of the loop. The field strength changes
to −0.24 T in 2.2 s. (The plus and minus signs for a magnetic field refer to opposite
directions through the coil.)
Find the magnitude of the average induced
emf during this interval.
Answer in units of V.

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