A long straight wire of a radius of 10.0 cm carries a steady current 27 A that is uniformly distributed through the cross-section of the wire. Calculate the magnetic field ( in units of µT ) at a distance of 7.5 cm from the center of the wire?

A long straight wire of a radius of 10.0 cm carries a steady current 27 A that is uniformly distributed through the cross-section of the wire. Calculate the magnetic field ( in units of µT ) at a distance of 7.5 cm from the center of the wire?

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter11: Magnetic Forces And Fields

Section: Chapter Questions

Problem 81AP: A 5.0-m section of a long, straight wire carries a current of 10 A while in a uniform magnetic field...

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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 straight wire of a radius of
10.0 cm carries a steady current 27
A that is uniformly distributed
through the cross-section of the
wire. Calculate the magnetic field (
in units of µT) at a distance of 7.5
cm from the center of the wire?
Select one:
O A. 32.4
O B. 21.6
OC. 72.1
OD. 67.5
O E. 40.5

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