Answer to Question #225287 in Electricity and Magnetism for Arf

Question

A thin disc of outer radius b with a concentric hole of radius a carries a current given by surface current density K = Ko0 around its z axis. 

(a) Find the total current I. (b) Find the magnetic field g (magnitude and direction) at the center of the disk. (c) Find the magnetic dipole moment m of the disk. 

Answer 1

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