Problem 28.7

Please wait for the animation to completely load.

The gray circle in the center represents a cross-section of a wire carrying current coming out of the computer screen (position is given in millimeters, 10^-3 m, and magnetic field strength is given in millitesla, 10^-3 T).  The current is uniformly distributed through the wire.  The black circle is an Amperian loop with a radius you can change with the slider.  Restart. 

1. What is the direction of the current in the wire? 
2. What is the current in the wire? 

Problem authored by Anne J. Cox.
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