above animations represent a typical bar magnet with a North and South pole. You
may double click anywhere inside the animation to add a magnetic field line. You
may also add a compass by clicking the “Add Compass” link.
animation correctly depicts a properly labeled magnet?
Reference: See Giancoli-PA: 20-1, Giancoli-SE: 27-1.
Animation 1. In this animation, there are two ways to
determine whether the magnet is properly labeled. One involves double-clicking
in the applet to add a magnetic field line. Magnetic field lines leave from North
poles and enter South poles, and therefore this animation is correct. The
second method involves a depiction of an actual in-class demonstration or lab
experiment. By adding a compass, the animation depicts moving a compass around a
permanent magnet. Since multiple compasses can be added, ask students what they
think the relationship between the compass needles and the magnetic field lines
will be. The compass needles should point tangent to the magnetic field lines.
This can also be shown with one compass by dragging it to follow a field line.
Script Author: Mario Belloni