Difference between revisions of "A Second Look at a Fundamental Concept in Electromagnetics"
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| − | It is worthwhile to examine more closely the concept that an electric current is defined by the product of charge times its velocity, or simply by the quantity of coulomb charge that passes a given point per unit time. It is suggested that this definition is sometimes inadequate to define the fields due to such a current, even if it is a d-c current, when the charge velocity is even a significant fraction of the speed of light. The fact will be demonstrated by analyzing the fields of a spinning charged ring on a time retarded basis. In the process, some interesting characteristics of spinning charges will be present.[[Category:Scientific Paper]] | + | It is worthwhile to examine more closely the concept that an electric current is defined by the product of charge times its velocity, or simply by the quantity of coulomb charge that passes a given point per unit time. It is suggested that this definition is sometimes inadequate to define the fields due to such a current, even if it is a d-c current, when the charge velocity is even a significant fraction of the speed of light. The fact will be demonstrated by analyzing the fields of a spinning charged ring on a time retarded basis. In the process, some interesting characteristics of spinning charges will be present. |
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| + | [[Category:Scientific Paper|second look fundamental concept electromagnetics]] | ||
Latest revision as of 10:03, 1 January 2017
| Scientific Paper | |
|---|---|
| Title | A Second Look at a Fundamental Concept in Electromagnetics |
| Author(s) | William L Hughes |
| Keywords | electric current, spinning charges, coulomb charge |
| Published | 1994 |
| Journal | Galilean Electrodynamics |
| Volume | 5 |
| Number | 4 |
| Pages | 86-91 |
Abstract
It is worthwhile to examine more closely the concept that an electric current is defined by the product of charge times its velocity, or simply by the quantity of coulomb charge that passes a given point per unit time. It is suggested that this definition is sometimes inadequate to define the fields due to such a current, even if it is a d-c current, when the charge velocity is even a significant fraction of the speed of light. The fact will be demonstrated by analyzing the fields of a spinning charged ring on a time retarded basis. In the process, some interesting characteristics of spinning charges will be present.
