Lorentz Physlet

A moving point charge generates magnetic and electric fields.

The Lorentz Physlet displays the electric and magnetic fields of a point charge moving at constant velocity in the x direction. The yz field is shown in the plane of the particle. The xy field can be animated to give you sense of the particle's motion. The yellow and green backgrounds in the xy plot represent a magnetic fields out-of and into the page, respectively. In the yz plot the electric field is shown as blue and the magnetic field as a green or yellow. (It is probably best to view one field at a time until you see what is going on.)




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