What is the Magnetic Field Below an Infinite Plane of Uniform Surface Current?

[redraider96]

Electromagnetics Problem...Please Help!

Please help!

1) a magnetic field on one side of an infinite plane of uniform surface current K=K*j(hat) is found to be

B= 1/4* mu(nought)*K*i(hat)

What is the magnetic field below the plane (accounting for the discontinuity across the plane)
I think I can use the following formula:

B(above)-B(below)=mu(nought)(K X n(hat))
The X here is a cross product.

Can someone confirm this for me?

 

[Tide]

The integral of the magnetic field along a closed path is proportional to the current passing through the closed path. See if you can find suitable symmetry to get what you need.