Magnetic Field Problem 9.6.2

Description

A cross section of a circular wire loop carrying an unknown current is shown above.   The arrows represent the direction of the magnetic field.  The color of the arrows represents the magnitude of the field with magnitude increasing as the color changes from blue to green to red to black.  You can double-click in the animation to add magnetic field lines, click-drag the center of the loop to reposition it, and click-drag the top or bottom of the loop to change its size. 

Question

Does current flow out of the red end or the blue end?   Start

Answer

Red represents current flowing out of the plane of the simulation.

Reference

See Giancoli-PA: 20-2, Giancoli-SE: 27-2.

Credits

Physlet problem authored by Wolfgang Christian.

2000 by Prentice-Hall, Inc. A Pearson Company