Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 58
urrent through a spool of wire is .5 am-pere and the drop in potential across the spool as indi-cated on a (0-15) voltmeter, having a resistance of 1500 ohms,is 12 volts. What is the resistance of the wire? Solution.—Substituting in equation (55) we have SEKIES AND DIVIDED CIRCUITS 47 12 R: X 1500… … JWWVWr Fig. 13 (R) connected in series with it, as shown in Fig. 13. Thedrop in potential over the known and unknown resistances ismeasured when they are both carrying the same current.The proper connections of the voltmeter for making thesemeasurements is shown in the figure by the full and…
Electrical engineering
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