Electrical instruments and testing; how to use the voltmeter, ohmmeter, ammeter, potentiometer, galvanometer, the Wheatstone bridge, and standard portable testing sets (1907)
Schneider, Norman H. (Norman Hugh), Hargrave, Jesse · New York, Spon & Chamberlain; [etc., etc.] · leaf 84
Fig. 46. Fig. 47. Fig. 48. have N poles or 5 poles at the same end. As simi-lar magnetic poles repel each other the strongerthese iron pieces become magnetized the fartherapart they move. The galvanometer principle, Fig. 49, is usedwhere a short magnet is pivoted inside a coil largeenough to give a…
Electric testing · Electric apparatus and appliances
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
