A heating element is made by maintaining a potential difference of 75.0 V across the length of a Nichrome wire that has a 2.60 x 10-6 m² cross section. Nichrome has a resistivity of 5.00 x 10-7 N•m. If the element dissipates 5000 W, what is its length? Give your answer in cm.

A heating element is made by maintaining a potential difference of 75.0 V across the length of a Nichrome wire that has a 2.60 x 10-6 m² cross section. Nichrome has a resistivity of 5.00 x 10-7 N•m. If the element dissipates 5000 W, what is its length? Give your answer in cm.

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 58AP

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Question

A heating element is made by maintaining a potential
difference of 75.0 V across the length of a Nichrome wire that
has a 2.60 x 10-6 m² cross section. Nichrome has a resistivity
of 5.00 x 10-7 Q m. If the element dissipates 5000 W, what is
its length? Give your answer in cm.
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