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Mathematics 10 Online
OpenStudy (anonymous):

The magnetic field B created by a constant magnetic dipole with moment μ is given by B = − μ krk3 + 3(μ · r)r krk5 , r 6= 0. Show that B is a solenoidal vector field and that a vector potential to B is given by A = μ × r krk3 .

OpenStudy (anonymous):

OpenStudy (anonymous):

Basically I need help with how to calculate the divergence of position vector r.

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