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← ScienceWhich outcome occurs when cooling a superconducting wire below its critical temperature?
A)Abrupt loss of electrical resistance✓
B)Increase in electron-phonon coupling
C)Increased magnetic field penetration depth
D)Formation of cooper pair condensation
💡 Explanation
Cooling below critical temperature allows electron 'pairing' (Cooper Pairs) caused by electron-lattice interactions; this induces the Meissner Effect. The mechanism is coherent phase matching between paired electrons, therefore resistance vanishes, rather than merely decreases, because electrons pass without scattering.
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