A long, cylindrical conductor of radius a has two cylindrical cavities each of diameter a through its entire length. A current I is directed out of the page and is uniform through a cross section of the conducting material. Find the magnitude and direction of the magnetic field in terms of µo, I,r and a at • point P1 • point P2 а P2 a r-

A long, cylindrical conductor of radius a has two cylindrical cavities each of diameter a through its entire length. A current I is directed out of the page and is uniform through a cross section of the conducting material. Find the magnitude and direction of the magnetic field in terms of µo, I,r and a at • point P1 • point P2 а P2 a r-

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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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

A long, cylindrical conductor of radius a has two cylindrical cavities each
of diameter a through its entire length. A current I is directed out of the
page and is uniform through a cross section of the conducting material.
Find the magnitude and direction of the magnetic field in terms of µo, I,r
and a at
• point P1
• point P2
а
P2
a
r-

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