A cylindrical wire of radius R carries a uniform current through its circular cross-section. Inside the wire at a distance of r from the central line the magnetic field is measured as B. What is the current density (J) in the wire? B O a. J= 2µor O b 2Br J = 2B J= JHor 2B O d. J= HoR O e. J= 210 Br R 240B O f. J= BR O8 J= Hor? B J = poR Oh.

A cylindrical wire of radius R carries a uniform current through its circular cross-section. Inside the wire at a distance of r from the central line the magnetic field is measured as B. What is the current density (J) in the wire? B O a. J= 2µor O b 2Br J = 2B J= JHor 2B O d. J= HoR O e. J= 210 Br R 240B O f. J= BR O8 J= Hor? B J = poR Oh.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A long straight wire carries a current of 40 A in a region where a uniform external magnetic field has a 30 µT magnitude and is parallel to the current. What is the magnitude of the resultant magnetic field at a point that is 3.5 cm from the wire? a. 230.53 µT b. 77.74 µT с. 65.31 иT d. 428.67 μΤ e. 30.00 µT