If you hold a sheet of copper in a strong permanent magnet, with the plane of the sheet perpendicular to the magnetic field, and quickly jerk it away, you will feel no magnetic force. you will experience a magnetic force opposing your action. any force you feel will be due mainly to iron impurities in the copper since copper itself is not magnetic. you will experience a magnetic force assisting your action.

If you hold a sheet of copper in a strong permanent magnet, with the plane of the sheet perpendicular to the magnetic field, and quickly jerk it away, you will feel no magnetic force. you will experience a magnetic force opposing your action. any force you feel will be due mainly to iron impurities in the copper since copper itself is not magnetic. you will experience a magnetic force assisting your action.

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter12: Sources Of Magnetic Fields

Section: Chapter Questions

Problem 5CQ: How would you orient two long, straight, current carrying wires so that there is no net magnetic...

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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

If you hold a sheet of copper in a strong permanent magnet, with the
plane of the sheet perpendicular to the magnetic field, and quickly jerk
it away,
you will feel no magnetic force.
you will experience a magnetic force opposing your action.
any force you feel will be due mainly to iron impurities in the copper
since copper itself is not magnetic.
you will experience a magnetic force assisting your action.

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