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If a superconductive wire can hold a current indefinitely, does that mean you can keep adding to the current and if so, how do you determine the capacity of a given length of superconductive cable? : askscience

If a superconductive wire can hold a current indefinitely, does that mean you can keep adding to the current and if so, how do you determine the capacity of a given length of superconductive cable? : askscience:

LuklearFusion 40 points 5 hours ago
Superconductors have a “critical current” beyond which the superconductivity is broken, and you no longer have a superconductor, just a normal conductor.
[–]lvachon 14 points 5 hours ago
What gives rise to this limit, some sort of saturation effect?

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