Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 178
Fig. 138,—Right-Hand Rule for Finding Direction of Current or Needles Deflection. 170. Right-HandRule for Directionof Current or De-flection of Needle. THE N-POLE OF A NEEDLE WILL BE TO FIND THE DIRECTIONDEFLECTED BY A CURRENT : Arrange the wire above and parallel to the needle when it is cU 160…
Electricity · Magnetism
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