Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1903)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 360
Fig. 310.—Graphical Representation of anAlternating Current. of time. The vertical line, AM, at rightangles to it is divided into distances representing units ofcurrent, the current being in a positive direction when indi-cated above PK, and negative, when below PK. When the DYNAMO ELECTRIC… … switch is closed the current immediately rises to its fullstrength of 5 amperes, or from P to A, and 5 amperes aremaintained constant in a positive direction for one 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…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
