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OpenStudy (anonymous):

To create electromagnetic induction, which of the following has to move? a wire a magnet a transformer either a or b

OpenStudy (anonymous):

either A or B, for EM induction to happen magnetic flux must change in time, you can move a wire loop in a magnetic field or move a magnet near a wire loop (or other circuit), both will cause the flux of the field trough the loop to change in time.

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