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← ScienceWhich phenomenon prevents induced current dissipation in superconducting coils?
A)Meissner effect expels magnetic fields
B)Flux pinning traps magnetic fields✓
C)Quantum tunneling allows electron transfer
D)Phonon interaction destabilizes Cooper pairs
💡 Explanation
Flux pinning prevents dissipation within superconducting coils at critical current because it traps magnetic flux lines, impeding their motion and energy loss; therefore persistent current flows, rather than resistive decay from free flux movement.
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