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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
An Introduction to Electrodynamics and Special Relativity
Author(s)
Bernard J. Feldman
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DOI:10.17265/2161-623X/2016.06.005
Affiliation(s)
University of Missouri-St. Louis, St. Louis, USA
ABSTRACT
This paper describes a paradox in electromagnetic theory involving a
charge moving with a velocity v parallel to a current carrying wire. In the frame of reference of the wire, the
charge feels a magnetic force. In the frame of reference of the charge, there
is no magnetic force, but there is an electric force due to the wire becoming
charged. The charge on the wire can only be explained by length contractions from the theory of
special relativity. This paradox is resolved both qualitatively and quantitatively.
KEYWORDS
electrodynamics, special relativity, Lorentz equation, Gauss’s Law, Ampere’s Law
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