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 206
creased, as notedby the additionalweights required tobe added to bal-ance the currentsattractive force.The strongest pullwill take place when the middle of the iron core nearlycoincides with the middle of the solenoid,as when they coincide the greatest numberof the currents magnetic lines are… … Fig. 175.—Weighingthe Magnetic Attrac-tion of a Solenoid forits Iron Core. amp? Fie. 177: to 176.—Automatic Cir-cuit Breaker. When the current becomesexcessive ttie magnetic fieldof the few series turns of wireattracts a solenoid which re-leases a spring and the switchopens. automatically open…
Electricity · Magnetism
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
![An illustration from [Electric engineering.] (1902)](https://img.insideoutlibrary.com/img/200/ia-electricengineer03inte-337-210.webp)
