Two parallel conductors carrying current in the same directionattract each other. If they are permitted to move toward each other, theforces of attraction do work. From where does the energy come? Doesthis contradict the assertion that magnetic forces on movingcharges do no work? Explain.

Two parallel conductors carrying current in the same directionattract each other. If they are permitted to move toward each other, theforces of attraction do work. From where does the energy come? Doesthis contradict the assertion that magnetic forces on movingcharges do no work? Explain.

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter22: Magnetic Forces And Magnetic Fields

Section: Chapter Questions

Problem 1P: A proton travels with a speed of 3.00 106 m/s at an angle of 37.0 with the direction of a magnetic...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

Question

Two parallel conductors carrying current in the same direction
attract each other. If they are permitted to move toward each other, the
forces of attraction do work. From where does the energy come? Does
this contradict the assertion that magnetic forces on moving
charges do no work? Explain.

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