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2 votes
1 answer
78 views

Superinsulator infinite voltage

Everybody knows about superconductivity, at cryogenic temperatures conductor resistance drops to zero for direct current. There is lesser known related phenomena called superinsulator where material ...
Soliton's user avatar
  • 119
0 votes
3 answers
1k views

Do metals at low temperature follow Ohm's law?

I think metals at low temperature do not follow Ohm's because of superconductivity. Is it true? What about metals at high temperature?
Rhea's user avatar
  • 13
2 votes
0 answers
210 views

Would there be any current if an electric circuit is cooled to absolute zero?

My question is if I got a superconductor and cool it to absolute zero at least measurable by today's tool, it should have no electrical resistance but then would there be any current when there is a ...
user6760's user avatar
  • 13k