Copyright © 1999 David E. Rutherford
All Rights Reserved
The Current Four-vector
A current four-vector can be formed by combining the proper charge,
, and its
four-velocity,
. The current
four-vector will, normally, be used in reference to a test charge moving
in the presence of electric and potential fields, rather than in reference
to the distribution of charge that creates the fields. The components of
the current four-vector,
, are
or in terms of the improper charge,
, we have
Copyright © 1999 David E. Rutherford
All Rights Reserved
E-mail: drutherford@softcom.net