2. A metal tube has inner radius R1 and outer radius R2, and its length l is very large compared to R2, i.e., l > R2. It carries a current I uniformly spread over its cross- sectional area. Find the magnetic field at a radial distance r from the central axis of the tube when (a) r< R1 (b) Rị R2 .

2. A metal tube has inner radius R1 and outer radius R2, and its length l is very large compared to R2, i.e., l > R2. It carries a current I uniformly spread over its cross- sectional area. Find the magnetic field at a radial distance r from the central axis of the tube when (a) r< R1 (b) Rị R2 .

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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Concept explainers

Magnetic Field Of Coaxial Cable

The word coaxial means same axis. So for a long straight cable to be coaxial, it must have concentric cylindrical shaped conductor around it. Coaxial cable (popularly called ‘coax’) has various applications ranging from current conductors to radiofrequency signal transmitters. This cable has lower emission losses and provides protection from electromagnetic interference which allows signals with less power to transmit over longer distances.For example, currents produced in the pickup of a stereo turntable generally travel to the amplifier through a coaxial cable.The self-inductance of a coaxial cable is another important characteristic, because it influences the propagation of electrical signals in the cable.

Question

2. A metal tube has inner radius R1 and outer radius R2, and its length l is very large
compared to R2, i.e., l > R2. It carries a current I uniformly spread over its cross-
sectional area. Find the magnetic field at a radial distance r from the central axis of
the tube when
(а) г < Ri
(b) Rị < r < R2 ,
(c) r > R2 .

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