Question: Current flows inside the infinitely long cylindrical region r a . The magnetic flux density inside the region is given by B = 2 0

Current flows inside the infinitely long cylindrical region r a. The magnetic flux
density inside the region is given by
B=2000
. There is no surface current at r = a.
(a) Find the current density
J.
(b) Find the total current I.
(c) Find the total current using Amperes circuital law.
(d) Determine the magnetic flux density
B, for r > a.

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