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Awire loop of radius 0.40 m lies so that an external magnetic field of magnitude 0.30 t is perpendicular to the loop. the field reverses its direction, and its magnitude changes to 0.20 t in 2.5 s. find the magnitude of the average induced emf in the loop during this time.
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Awire loop of radius 0.40 m lies so that an external magnetic field of magnitude 0.30 t is perpendic...
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