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