Electricity for public schools and colleges (1891)
Larden, W. (Walter), b. 1855 or 6 · London : Longmans · leaf 318
appreciably diminishing thisJiV by lessening the resistance between them. Hence we sawthat the coil was made of a very high resistance. In the present case it is desired to measure currents withoutappreciably diminishing them by the introduction of resistance.The coil, therefore, must be of as low… … of thick copper wire, or copper strip, of a resistance equal to aboutj~yp ohm. There is also a special arrangement of the terminals, toobviate inconveniences or accidents in dealing with large currents, andthe leads are so arranged that the current passing through them hasno action on the needle. §…
Electricity
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