18 - chapter27-question18When 120 V is applied across a wire that is 20 m long and has a 0.40 mm radius, the magnitude of the currentdensity is 1.5 x10 A/m2. Find the resistivity of the wire in 2. m.Option1Option2Option3Option4Option52.0 x 10-27.0 x 10-84.0 x 10-89.0 x 10-86.0 x 10-8)O Option5E)O Option1DO Option4DO Option3Option2

Given:voltage V=120VLength L=20 mRadius r=0.4 mm=0.4*10-3m=0.0004 mCurrent density J=1.5*108A/m2To…

When 120 V is applied across a wire that is 20 m long and has a 0.40 mm radius, the magnitude of the current density is 1.5 ×10°A/m?. Find the resistivity of the wire in 2. m. Option1 Option2 Option3 Option4 Option5 2.0 x 10-2 7.0 x 10-8 4.0 x 10-8 9.0 x 10-8 6.0 x 10-8

When 120 V is applied across a wire that is 20 m long and has a 0.40 mm radius, the magnitude of the current density is 1.5 ×10°A/m?. Find the resistivity of the wire in 2. m. Option1 Option2 Option3 Option4 Option5 2.0 x 10-2 7.0 x 10-8 4.0 x 10-8 9.0 x 10-8 6.0 x 10-8

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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