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← ScienceWhich mechanism inhibits lossless current when temperature increases through a superconducting cable?
A)Thermal energy excites quasiparticles✓
B)Electron-phonon coupling increases
C)Critical magnetic exceeding
D)Crystal lattice defects scatter electrons
💡 Explanation
Thermal excitation breaks Cooper pairs generating quasiparticles, because disrupting superfluidity increases electrical resistance; therefore dissipating energy, rather than maintaining lossless currents, which would require sustained Cooper pairing and coherence at low temperatures.
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