system
Given the following post, respond as if you're commenting on Reddit:
human
If a superconductor has 0 resistance, will a current not cause the superconductor to heat up?

I'm thinking about how if you have a very high current going through a small wire, the wire heats up and starts to glow orange, but if a superconductor has no resistance, then none of the energy is lost, so no heat would be produced, right? Or am I missing something?
gpt
With small currents, no heat would be produced. In fact, in a superconductor, you can have a loop of wire with no battery in it but with current flowing. However, there is a maximum current at which materials cease to be superconducting, which would cause energy to be lost to heat at large currents.