Look at the figure. a) Which component of magnetic field - axial (B_axial) or radial (B_radial) should be larger at the center of the coil? B_axial >B_radial Both components are equal B_axial < B_radial b)What should be the theoretical ratio of these two components at the center of the coil?

Look at the figure. a) Which component of magnetic field - axial (B_axial) or radial (B_radial) should be larger at the center of the coil? B_axial >B_radial Both components are equal B_axial < B_radial b)What should be the theoretical ratio of these two components at the center of the coil?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 80AP: The current density in the long, cylindrical wire shown in the accompanying figure varies with...

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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

Look at the figure.

a) Which component of magnetic field - axial (B_axial) or radial (B_radial) should be larger at the center of the coil?

B_axial >B_radial

Both components are equal

B_axial < B_radial

b)What should be the theoretical ratio of these two components at the center of the coil?

Consider the coil shown in the figure below. Assume that the coil is
infinitely long.
O
Axial
Magnetic Field,
BAXIAL
Radial
Magnetic Field
BRADIAL
Current I

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