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# a uniform current density J inside an infinite plate of thickness 2d parallel to its surface. find the magnetic field induction inside and outside the plate

Arun Kumar IIT Delhi
7 years ago
We take a small section of the plate.

Now

$2Bdl=\mu _{0}(2xdl)J \\for\, x<|d| \\B=\mu _{0}xJ \\for\,x>|d| \\B=\mu _{0}d*J$

Arun Kumar
IIT Delhi