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Which mechanism causes complete electron pairing in superconductivity?

A)Cooper pair formation
B)Phonon-electron scattering
C)Quantum Hall resistance
D)Debye frequency reduction

💡 Explanation

Cooper pair formation, where electrons pair via lattice vibrations resulting in zero resistance, causes superconductivity because paired electrons move coherently rather than individually like in normal conductors, therefore resistivity vanishes rather than slowly decreasing.

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