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← ScienceWhich outcome occurs when a Josephson junction is cooled near absolute zero?
A)Supercurrent flows without applied voltage.✓
B)Resistance increases due to electron scattering.
C)Thermal expansion fractures the barrier.
D)Magnetic flux saturates the materials
💡 Explanation
Supercurrent appear because Cooper pairs tunnel through the insulating barrier via Quantum Tunneling. Therefore, a current flow with no voltage applied, rather than resistance building, because the barrier becomes transparent.
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