Practical Talks on Electricity, Vol. 2: Care and Management of Dynamos and Motors (Classic Reprint) - Hardcover

Inhaltsangabe

Excerpt from Practical Talks on Electricity, Vol. 2: Care and Management of Dynamos and Motors

For detecting the presence Of a current in a conductor, the simplest kind Of a galvanometer will answer; such instruments, which are commonly called current detectors, are cheaply made and some of them can be bought for 50 or 75 cents. For making measurements Of resistance, it is necessary to have a more ac curately constructed instrument. The simplest way in which a galvanometer can be arranged to measure resistance is shown in Fig. I44, but this method is seldom used, except for very high resistances, as it is not accurate.

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