Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book . A Weight of B IP is 59lba 55lhs iffiffiKPCD 2) CD (D SO lbs. Fig. 203.—Hydraulic Analogy of the Fall of Potential. 230. Volts Lost in an Electric Circuit.—Consider nowan electric circuit in which a generator (battery or clyamo)is supposed to maintain a constant pressure of 60 volts be-tween two parallel lines at the point A, Fig. 204, as indicatedby a high resistance galvanometer or voltmeter. Withno current flowing from the generator the voltmeter willindicat
Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book . A Weight of B IP is 59lba 55lhs iffiffiKPCD 2) CD (D SO lbs. Fig. 203.—Hydraulic Analogy of the Fall of Potential. 230. Volts Lost in an Electric Circuit.—Consider nowan electric circuit in which a generator (battery or clyamo)is supposed to maintain a constant pressure of 60 volts be-tween two parallel lines at the point A, Fig. 204, as indicatedby a high resistance galvanometer or voltmeter. Withno current flowing from the generator the voltmeter willindicate 60 volts at point B (neglecting the pressure used to MEASUREMENT OF PRESSURE. 231 transmit the small current used by the voltmeter). Byclosing the switch at B one lamp is lighted, and an ammeterindicates 1 ampere flowing through the circuit. The volt-meter at A still indicates 60 volts, but the voltmeter at Bonly 50 volts. There is, therefore, a difference in pressurebetween points A and B of 10 volts, which is used in over-coming the resistance of the line and causing the one ampereto flow through it. The available pressure at point B toperform useful work in the lamp is, therefore,
Size: 3248px × 769px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1901
