What fundamental fact underlies the operation of essentially all electric motors?

A) Iron is the only element that is magnetic.
B) A current-carrying conductor placed perpendicular to a magnetic field will experience a force.
C) Opposite electric charges attract and like charges repel.
D) A magnetic North pole carries a positive electric charge, and a magnetic South pole carries a negative electric charge.
E) Alternating current and direct current are both capable of doing work.


B

Physics & Space Science

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