Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 75
esistance ofthe respective coils will be 1, 2, 3, 4 and 5 ohms as shown, and by applying EOhms law, I = -^, to each circuit when E = b volts, the current will be 5, 2.5, 1.66, 1.25 and 1 amperes respectively, as indicated. In Fig. 72 is shown a circuit having two resistances /?, and R^ con-nected… … Fig. 72.—Two resistances in series. Therefore, the total resistance R of the circuit shown in Fig. 72 maybe found by the formula: R = Ri+R2 = %+7=\b ohm.s. The current in amperes equals the total volts divided by the total resist-ance; that is, E 127.5 = 8.5 amperes. / = - =R 15 Flow of Electric…
Electric machinery
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