Gage, Alfred P. (Alfred Payson), 1836-1903, Fessenden, C · Toronto : W.J. Gage · leaf 239
flow in opposite directions, theytend to produce a deflection in the same direction, and the resultis a deflection twice as great as that produced by a single cur-rent. The same result is accomplished if the same curient ismade to pass both above and below a needle, as in A, Figure140. If the wire… … in B, the influence of the current on the needle would be aboutfour times that of a single turn. Very sensitive galvanometers,constructed on this principle, often with thousands of turnsof wire, are sometimes called long-coil galvanometers, in dis-tinction from those having few turns, which are…
Physics
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