Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 476
tor may be regarded as p s T J ° Fig. 290. surrounded by circular lines of force which expand as the current increases. Then,since the induction through the area enclosed by the second- O J ary is increasing, the direction of the induced current willbe negative with respect to the lines of force,… … Fig. 291. Fig. 292. the face of the circuit nearest X will be north, or the cur-rent will flow in the direction RQPO when the circuit isclosed. As another example, let JLLLJK (Pig. 292 ) be a coil whichmay be made to revolve about a horizontal axis. aa. andsuppose that it is placed in a uniform…
Physics
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