All Questions
12
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38
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Ideal Superconductor connected to Zero Voltage
If an ideal superconductor was just left alone, with no potential difference, what would be the current flowing in it?
According to Ohm's Law, $V = IR$
Hence, if a superconductor of $0\Omega$ ...
6
votes
1
answer
538
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Help in understanding superconductivity?
I am a high school student doing a science project in superconductivity. My knowledge in physics is hence not pretty advanced but I am doing my best to understand the subject. What I find really ...
- 121
4
votes
4
answers
469
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Would we need Alternating Current if superconducting wires existed?
The major advantage of Alternating Current is that it can be transmitted to large distances without significant losses, which is not possible in Direct Current.
Had economical superconducting wires ...
0
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3
answers
1k
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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?
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1
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Intuition of how free electron moves in superconductor? [closed]
I imagine some of the valence electrons clashes with incoming traffic which arise as electrical resistance in wiring at room temperature, how would these electrons move in superconductor which results ...
- 13k
2
votes
0
answers
210
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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 ...
- 13k
2
votes
2
answers
244
views
In superconductivity, does the diameter of the cable affect the current?
In the water tank analogy below, the smaller diameter pipe (B2)
will drain tank A slower than the larger diameter pipe (B1)
We are told that resistance has this same effect on current
the bigger the ...
- 607
0
votes
1
answer
58
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Does a battery 'excites' current to flow in a superconductor? [duplicate]
If yes, how is it possible since a closed circuit with no resistance means 0 voltage, how does the electrons flow initially if there's no potential difference? Any simple explanation or analogy would ...
user211676
2
votes
3
answers
582
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Does current in a superconducting circuit ever decay?
Once a current has been started in a superconducting loop, say by induction, will it truly stay on forever or is it intrinsically doomed to decay, albeit slowly?
For example, can radiative losses ...
- 24.9k
7
votes
2
answers
343
views
Is electricity perpetual in a superconductor system?
I wonder if electricity consumption happen according to the Law of conservation of energy and Joule effect, in a regular circuit certain amount of energy is transformed into heat by components ...
- 171
1
vote
2
answers
199
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Initiating & maintain current flow in a superconductor?
When a material is cooled to reach it's SC-state, how can there be current flow if $R$ = $0$? Also, would a SC required excessive energy to maintain it's temperature & the SC state?
- 1,110
21
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3
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14k
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Can a superconducting wire conduct unlimited current?
A superconducting wire has no electrical resistance and as such it does not heat up when current passes through it. Non-superconducting wires can be damaged by too much current, because they get too ...
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