Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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The power usage of a DC strip heater is to be determined at a 95% confidence level, using a voltmeter and ohmmeter (P =E2/R). Determine the design state uncertainty of power, using a nominal vale of E = 8v and R = 5 ohm.

  Instrument Error (95%) Resolution
Voltmeter +- 0.5% 0.01 [V]
Ohmmeter  +- 0.3% 0.001 [ohm]
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