An infinite sheet of thickness t lying in yz plane carries a current flow in the positive z direction, of uniform density J along the y axis. What is the direction of the magnetic field along the positive x-axis (i.e., x > 0)? If the current per unit length is 4326 A/m, what is the net change of the magnetic field measured in passing from x1 0? The permeability of free space is 4 107 T m/A . Answer in units of T.

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