Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a 0.5 mm diameter as the heating element, how long should the wire be (in unit of meters) if you want to generate 15 W of heating power?(Take the resistivity of the copper wire as p= 1.7 x 10^(-8) Ω.m) Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a 0.5 mm diameter as the heatingelement, how long should the wire be (in units of meters) if you want to generate 15 W of heating power?(Take the resistivity of the copper wire as p1.7 x 10-8 2 · m.)

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Answered: Consider a portable electric blanket…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 66AP: When a straight wire is heated, its resistance changes according to the equation R = R0 [1 + (T ...

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Consider a portable electric blanket that runs on a 4.5 V battery. If you use copper wire with a 0.5 mm diameter as the heating element, how long should the wire be (in unit of meters) if you want to generate 15 W of heating power?

(Take the resistivity of the copper wire as p= 1.7 x 10^(-8) Ω.m)

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