| DESCRIPTION:
These animations show the field and force on a point
charge as it moves from a region with no external electric
field to a region with a constant electric field (the
field points upwards, or out of the screen in the top
view). As indicated by the arrow, the particle feels
no force while in the empty region, but feels a constant
upwards force for the entire time it spends in the region
of constant external field. Note that unlike the case
of a particle moving through a magnetic
field, the force felt by the particle in an electric
field is not proportional to its velocity.
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