ampere. A long, straight wire with a circular cross section of radius R. carries a current I. Assume that the current density is not constant across the cross section of the wire, but rather varies as J = ar where a is a constant. What is the magnitude of the magnetic field B(r) for r < R? OA. B=Hoa R OB. B=Hoa O C. B= Hoa 13 OD. B=Moa

ampere. A long, straight wire with a circular cross section of radius R. carries a current I. Assume that the current density is not constant across the cross section of the wire, but rather varies as J = ar where a is a constant. What is the magnitude of the magnetic field B(r) for r < R? OA. B=Hoa R OB. B=Hoa O C. B= Hoa 13 OD. B=Moa

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 45P: A long, straight wire of radius R caries a current I that is distributed uniformly over the...

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