Created by StemPy LabWhat keeps the coil of a DC motor turning in one direction?
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← In a class demonstration, a copper rod rests on two rails, and 0.12 m of it lies between the poles of a magnet. The field there is 0.4 T, across the rod, and 2.5 A is passed. How hard does the field push the rod?Iron filings are sprinkled on a card round a long coil that carries a current. The pattern outside the coil is most like the pattern round which of these? →
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