A short piece of wire (length L) carrying a direct current (I) is placed in front of

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Question:

A short piece of wire (length L) carrying a direct current (I) is placed in front of an infinite ground plane (the yz-plane). Find the magnetic field (B) everywhere in front of the ground plane. The wire is located from (u, -L/2, 0) to (u, L/2, 0) as shown. Also find the surface current density on the ground plane