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Which outcome impairs magnetic shielding when a ferromagnetic conduit reaches its Curie temperature?

A)Domain alignment becomes randomized
B)Susceptibility to H-field increases
C)Magnetostriction reaches zero
D)Coercivity gets exponentially stronger

💡 Explanation

Random domain shifting reduces shielding effectiveness because thermal energy exceeds domain alignment energy via the Curie point transition; therefore, materials lose ferromagnetic properties, rather than enhancing susceptibility as the alignment falls due to the absence of coupling with previously aligned atoms.

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