28. (a) If the resistance of the wire in Exercise 27 cannot vary by more than...
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28. ••
(a) If the resistance of the wire in Exercise 27 cannot vary by more than ±5.0% from its value at 20°C, to what operating temperature range should it be restricted?
(b) What would be the operating range if the wire were, instead, made of copper?
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Related Book For 
College Physics Essentials Electricity And Magnetism Optics Modern Physics Volume Two
ISBN: 9781032337272
8th Edition
Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
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