Electrical installations of electric light, power, traction and industrial electrical machinery (1902)
Kennedy, Rankin, d. 1917 · Edinburgh T.C. & E.C. Jack · leaf 40
PiG. 20.—Cheap Form ofDaniell Cell Current If we send electric current round a wire ring, and place a compass7ieedle in or near the centre, the axis 4 5 2. \ N - , . of the rinor beins: ^^^ ^ ^ ^ \^^ ~^^/ / y ^ ^^ t> turned east andwest, the needle willbe dellected fromits north and… … Fig. 21.—Tangent Scale the current in thering of copper wire. Ihis simple device can be used to measure the current. Thestrength of the current is proportional to the tangent of the angleof deflection of the needle. A tano-ent scale for the dial of theneedle could be made as follows :— Take the…
Electrical engineering · Electric power
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
