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Which mechanism causes zero electrical resistance when ceramic is cooled in liquid nitrogen?

A)Cooper Pair formation dominates
B)increased electron phonon scattering
C)impurity band conduction increases
D)grain boundary resistance dominates

💡 Explanation

Superconductivity appears due to Cooper Pair formation; two electrons form a bound state, allowing them to move without scattering, because this is the mechanism rather than increased scattering effects. Therefore, Cooper Pair formation dominates rather than impurity or boundary effects.

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