Individual and Resultant Force Magnetic Field of a Current-Carrying Rectangular Coil in a External Magnetic Field.

I am wondering if i can use this;topicseen#msg4902

Or the original also can?

to create a checkbox for [img];topic=1273.0;attach=1426;image[/img]

some beginning trainee teacher wanted a picture of magnetic field of a current carrying wire in a external magnetic field like the attached picture right side resultant diagram.

i don't seem to have seen it before as an applet here.
for ur consideration ;D