A long, straight wire carries a current of 8.0 A. A portion of the wire isbent into a loop of radius 0.20 m. Find the magnitude and direction ofthe net magnetic field at the center of the loop. (Let the direction out ofthe paper as positive.)

Circular loop radius, r=0.20 m Current passing through wire, I=8 A

A long, straight wire carries a current of 8.0 A. A portion of the wire is bent into a loop of radlus 0.20 m. Find the magnitude and direction of the net magnetic field at the center of the loop. (Let the direction out of the paper as positive.)

A long, straight wire carries a current of 8.0 A. A portion of the wire is bent into a loop of radlus 0.20 m. Find the magnitude and direction of the net magnetic field at the center of the loop. (Let the direction out of the paper as positive.)

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 35P: When the current through a circular loop is 6.0 A, the magnetic field at its center is 2.0104 T....

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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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A long, straight wire carries a current of 8.0 A. A portion of the wire is
bent into a loop of radius 0.20 m. Find the magnitude and direction of
the net magnetic field at the center of the loop. (Let the direction out of
the paper as positive.)

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