Text-book of general physics, for the use of colleges and scientific schools (1899)
Hastings, Charles Sheldon · Boston: Ginn & company · leaf 491
nt which would give the same read-ing will be \fp, an expression often termed the virtual current.The virtual electromotive force is defined in a similar manneras the square root of the mean square of the varying valuesof the actual electromotive force. The calculation of these quantities requires… … Fig. 312. / LAG A XL LEAD. 481 max where E is the electromotive force at any instant, and Exis its greatest value ; t is the time reckoned from an instantwhen E is zero, and n is the frequency or reciprocal of theperiod of an alternation.Similarly, ■ (4) i = ?max sin (2 77nt — (f)), where <f>…
Physics
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