Use the fact that the resistance of a wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. A 10-foot piece of copper wire produces a resistance of 0.2 ohm. Use the constant of proportionality k = 0.000833 to find the diameter of the wire. (Round the answer up to three decimal places.) O 0.38 ft O 0.73 ft 0.48 ft O 0.58 ft 0.23 ft

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter3: Polynomial Functions
Section3.5: Mathematical Modeling And Variation
Problem 6ECP: The resistance of a copper wire carrying an electrical current is directly proportional to its...
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Use the fact that the resistance of a wire carrying an electrical current is directly proportional to its length and
inversely proportional to its cross-sectional area.
A 10-foot piece of copper wire produces a resistance of 0.2 ohm. Use the constant of proportionality k
= 0.000833 to find the diameter of the wire.
(Round the answer up to three decimal places.)
0.38 ft
0.73 ft
0.48 ft
0.58 ft
O 0.23 ft
Transcribed Image Text:Use the fact that the resistance of a wire carrying an electrical current is directly proportional to its length and inversely proportional to its cross-sectional area. A 10-foot piece of copper wire produces a resistance of 0.2 ohm. Use the constant of proportionality k = 0.000833 to find the diameter of the wire. (Round the answer up to three decimal places.) 0.38 ft 0.73 ft 0.48 ft 0.58 ft O 0.23 ft
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