@Jimmy Kariznov
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this means that wire would then have infinite current, how is that possible..
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Neeraj Kadian
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4 years ago

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@Neeraj Kadian
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So, let's say we take a battery and short it out with a wire. The resistance of the wire plus the internal resistance of the battery is very tiny (but still positive). So, the current is just really large (but still finite).

I don't know much about superconductors, but that Wikipedia article says that when running a current through it, the voltage is the same at both ends. Hence, the resistance is 0.
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Jimmy Kariznov
·
4 years ago

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TopNewestIf you have a really short wire, the resistance will be close to \(0 \ \Omega\).

Also, superconductors have zero DC resistance. – Jimmy Kariznov · 4 years ago

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– Neeraj Kadian · 4 years ago

this means that wire would then have infinite current, how is that possible..Log in to reply

I don't know much about superconductors, but that Wikipedia article says that when running a current through it, the voltage is the same at both ends. Hence, the resistance is 0. – Jimmy Kariznov · 4 years ago

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