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← ScienceWhich outcome accompanies the Meissner effect in YBCO?
A)Magnetic field expulsion occurs completely✓
B)Internal resistance increases proportionately
C)Electron mobility decreases significantly
D)Thermal phonon energy levels collapse
💡 Explanation
Perfect diamagnetism occurs through the Meissner effect, expelling all magnetic fields because supercurrents cancel the external field distribution; therefore magnetic expulsion occurs, rather than resistance increase because of Cooper pairs.
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