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← ScienceWhich critical outcome prevents persistent currents in quench-protected superconducting magnets?
A)Flux pinning prevents complete expulsion✓
B)Reduced electron-phonon coupling maintains Tc
C)Increased magnetic field enhances Meissner
D)Quantum entanglement ensures coherence length
💡 Explanation
Flux pinning limits complete flux exclusion driving resistance during transitions because the Abrikosov vortices impede flux expulsion. Therefore preventing lossless current flow during resistance, rather than enhanced Meissner because it's related to complete (not partial) flux expulsion.
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