4 ms·
Minor nitpick — "now we can run 1 billion amps at 100V" — there is a limit to how much current you can put down a superconductor. For example I think commercial
by heisenzombie 3y ago
Minor nitpick — "now we can run 1 billion amps at 100V" — there is a limit to how much current you can put down a superconductor. For example I think commercial YBCO superconductor tape will do roughly 1000A/mm^2 (and even that requires being significantly below its critical temperature).
That’s a pretty high current density compared to what’s feasible with copper — don’t get me wrong — but a billion amps would still require a pretty huge cable even with a superconductor.
- tomxor 3y agoPresumably everything in the chain, every junction, would also need to be a pure super conductor? Anything else would be susceptible to instantly melting or vaporising. So unless someone comes up with super conducting welding I guess that would mean no junctions.
- SomeoneFromCA 3y agoNot only that, the magnetic field around the wire at 1 bln amps will be way too large. It will like pick up nails from the ground easily.