International Library of Technology · Scranton, International Textbook Co. · leaf 202
In Fig. 999, B is the bat-tery, the current from whichflows through the known resistance a b and the unknownresistance b c. Voltmeters V M and K, J/, measure thefall of potential across each. The same voltmeter mightreadily be used for both readings. Example.—1. If the resistance ab\s known to be 2… … Fig. 999. 4.25 or, 2x6.124.25 6.1212.24 4.25 ohms. Ans. Example.—2. If the drop through the known resistance is 6.28 voltsand through the unknown 2.25, what is the unknown resistance if theknown is 3.5 ohms ? Ans. 1.254 ohms. 2508. Another way to attain the same result would beto connect the known…
Electrical engineering
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