Assumptions - Magnetic Field Due To A Current In A Straight Wire
The applet simulates the magnetic field due to a current in a
straight wire and the contributions to the field from the current
in short segments of the wire.
The applet makes the following assumption.
When individual segments of the wire are selected, the
applet, in calculating the magnetic field due to these
segments, takes the position of a segment to be that of the
center point of the segment.