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 360
ne second,A to B. When point B is reached at the end of the firstsecond the current falls abruptly to zero, B to C, and rises to5 amperes in a negative direction, and is maintained for anequal interval of time, D to E, when it again falls to zero, atF, and repeats the same cycle of events in equal… … oll.—Graphical Representation of anAlternating Current. tion of the loop the current and E. M. F. varied. Thisvariation in magnitude is represented in Fig. 311, which isconstructed similar to Fig. 3JO, but the current graduallyrises to its maximum value of 6 amperes, P to A, and asgradually…
Electricity · Magnetism
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