A coaxial cable has an inner, solid wire of radius r1 and outer, hollow wire of radius r2 . A current flows I through the inner wire and returns through the outer wire. Assuming that the cable is vey long calculate the magnetic field

A coaxial cable has an inner, solid wire of radius r1 and outer, hollow wire of radius r2 . A current flows I through the inner wire and returns through the outer wire. Assuming that the cable is vey long calculate the magnetic field

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter14: Inductance

Section: Chapter Questions

Problem 51P: A current of 1.2 A is flowing in a coaxial cable whose outer radius is five times its inner radius....

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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.

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