Question: A fixed 15.4 cm diameter wire coil is perpendicular to a magnetic field 0.43 T pointing up. In 0.11 s, the field is changed to

A fixed 15.4 cm diameter wire coil is perpendicular to a magnetic field 0.43 T pointing up. In 0.11 s, the field is changed to 0.3 T pointing down. What is the average induced emf in the coil

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