An emf is induced by rotating a 860o turn 210 cm diameter, Ask an Expert

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An emf is induced by rotating a 860^oturn, 21.0 cm diameter coil in the Earth's 4.50x10^-5 T magnetic field. What average emf is induced, given the plane of the coil is originally perpendicular to the Earth's field and is rotated to be parallel to the field in 12.0 ms?

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