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← ScienceWhich mechanism causes magnetic flux expulsion in superconductors?
A)Meissner effect expels magnetic fields✓
B)Proximity effect traps magnetic fields
C)Flux pinning creates stable magnetic domains
D)Critical current collapses magnetic shielding
💡 Explanation
The Meissner effect causes expulsion of magnetic flux because the superconductor excludes external magnetic fields, creating opposing currents; therefore magnetic fields cannot penetrate, rather than being trapped or stabilized as magnetic domains in non-superconducting material.
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