Consider a resistor of resistivity 3.89 × 10-5 Ω • m, length 15.21 m, and unknown cross-sectional area. What potential difference, in millivolts, should be applied across the said resistor so the current density in it is 36.69 A/m2?

University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
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Chapter9: Current And Resistance
Section: Chapter Questions
Problem 31P: Consider a wire of a circular cross-section with a radius of R = 3.00mm. The magnitude of the...
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Consider a resistor of resistivity 3.89 × 10-5 Ω • m, length 15.21 m, and unknown cross-sectional area. What potential difference, in millivolts, should be applied across the said resistor so the current density in it is 36.69 A/m2?

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