Question: Find the surface current density K(,) on the surface of sphere of radius a which will produce a magnetic field inside the sphere of B

Find the surface current density K(θ,φ) on the surface of sphere of radius a which will produce a magnetic field inside the sphere of B<(x, y, z) = (B0 a)(xx̂ − yŷ). Express your answer in terms of elementary trigonometric functions.

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