Authors: Yannan Yang
Two types of electric currents and related magnetic fields were analyzed deeply in this paper. One is the current in a neutral wire, which is very familiar to us. The other current is the result of directional motion of one type (positive or negative) charges suspended in the space. The analysis results show that the two types of currents and related magnetic fields have same properties to observers in stationary frame. But, to the observers in a moving frame, the two types of currents and related magnetic field appear very different behaviors. In the second situation, it looks not sufficient to determine a magnetic field to a given point in space only by its magnitude and direction. In order to sufficiently determine the magnetic, the source of the magnetic field is also required to be considered into.
Comments: 8 Pages.
[v1] 2016-12-21 01:38:23
Unique-IP document downloads: 29 times
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