[Q8] A length of copper wire has resistance of 0.172 and a cross sectional area of 7.85 × 10-5 m².The resistivity of copper is 1.72 x 10-8 · m. What is the length of this piece of wire?873 m.250 m.C.78.5 m.d.785 m.e. 6,570 m.f. None of the abovea.b.

Length will be given as L = RA/rho =0.172 x 7.85 x 10-5 /1.72x 10-8 = 785 m

8] A length of copper wire has resistance of 0.172 S and a cross sectional area of 7.85 × 10–5 m² The resistivity of copper is 1.72 x 10-8 Nm. What is the length of this piece of wire? 873 m. 250 m. C. 78.5 m. d. 785 m. e. 6,570 m. a. b.

8] A length of copper wire has resistance of 0.172 S and a cross sectional area of 7.85 × 10–5 m² The resistivity of copper is 1.72 x 10-8 Nm. What is the length of this piece of wire? 873 m. 250 m. C. 78.5 m. d. 785 m. e. 6,570 m. a. b.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 69AP: A coaxial cable consists of an inner conductor with radius r1=0.25cm and an outer radius of r0=0.5cm...

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[Q8] A length of copper wire has resistance of 0.172 and a cross sectional area of 7.85 × 10-5 m².
The resistivity of copper is 1.72 x 10-8 · m. What is the length of this piece of wire?
873 m.
250 m.
C.
78.5 m.
d.
785 m.
e. 6,570 m.
f. None of the above
a.
b.

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