A uniform external field B ext B ext x is applied to an infinitely long cylindrical shell with inside radius a, outside radius b, and relative permeability m 0 The rest of space is vacuum Show that the field inside the shell is screened to the value Bin Bext 4kmb (Km 1)b (Km 1)a K a Bext 11 Bext

Question: A uniform external field B ext = B ext x is applied to an infinitely long cylindrical shell with inside radius a, outside radius b,

A uniform external field B_ext= B_ext x̂ is applied to an infinitely long cylindrical shell with inside radius a, outside radius b, and relative permeability κ_m = μ/μ₀. The rest of space is vacuum. Show that the field inside the shell is screened to the value

Bin Bext 4kmb (Km + 1)b (Km 1)a K a -Bext- 11

Bin Bext 4kmb (Km + 1)b (Km 1)a K a -Bext- 11 Bext

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