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← ScienceWhich mechanism prevents ohmic heating dissipation in superconducting magnets used for MRI?
A)Meissner effect expelling magnetic fields
B)Cooper pair formation enabling conductance✓
C)Flux pinning preventing magnetic creep
D)Quantum Hall effect reduces resistance
💡 Explanation
Cooper pair formation causes superconductivity below a critical temperature, therefore current flows without resistance because electrons form pairs via phonon interactions, rather than single electrons scattered by lattice imperfections, creating heat.
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