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← ScienceWhich mechanism causes lossless current flow when niobium-titanium reaches critical temperature?
A)Cooper pair formation via phonon exchange✓
B)Increased lattice vibration energy absorption
C)Enhanced electron-phonon scattering rate
D)Suppressed electron-electron repulsive forces
💡 Explanation
Cooper pair formation via phonon exchange allows electrons to flow without resistance because electrons bind into pairs that move coherently with minimal scattering; therefore superconductivity, rather than resistance, results because alternative mechanisms cause electron scattering.
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