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 220
itselfthe greatest number of the magnetic linesof the helix, then the limit of the scalewas attained and the capacity of the instrument was 0 to 10amperes. By attaching a small weight to the core, if thewire wrere of sufficient size to carry the current, the capacitycould readily be made 0 to 20… … Fig. 188.—SolenoidGravity Ammeter. e m Ammeter DYJVA.MO T ss LAMPS Fig. 189.- -Ammeter Correctly Connected in Serieswith the Circuit. same increment of current, giving a scale of unequal divisions,and generally cramped at each end. The instrument is notdead beat, is readily affected by magnetic…
Electricity · Magnetism
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