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OpenStudy (anonymous):
what produces the emf in an electric generator? A. an electric battery B. the repulsion between a positive charge and the north pole of a magnet C. a coil rotating in a magnetic field to change its flux D. an electric current in a coil that produces a torque on the coil to make it rotate
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rvc (rvc):
C
OpenStudy (michele_laino):
it is option C, since in those rotating coils an emf will appear, and that emf generates a current
OpenStudy (anonymous):
oh! ok thanks!!
OpenStudy (michele_laino):
:)
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