All Questions
8
questions
0
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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 $0\Omega$ ...
4
votes
4
answers
469
views
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 ...
1
vote
2
answers
96
views
Is it possible to maintain the electric current permanently? [duplicate]
I thought this question when I learn about the superconductor which has no resistance.
If I made the round wire with the superconductor, I think it is possible for the current to flow through the ...
- 353
0
votes
3
answers
154
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Why can't we have superconductors?
My book says, "Short circuiting occurs when the live wire comes in direct contact with the neutral wire, so a zero resistance path is provided to the current. A heavy current then passes through the ...
- 127
2
votes
2
answers
244
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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
2
votes
0
answers
846
views
Drift velocity of electrons in a superconducting loop
Do electrons travel at the Fermi velocity in a superconducting loop?
For metals the Fermi velocity seems to be around $10^6$ m/s.
So would electrons (in a Cooper pair) travel around the loop at this ...
- 5,925
2
votes
0
answers
93
views
Current between supeconducting rings
How to calculate the current between two superconducting rings with radius r separated by a distance d?
Please note that being unfamiliar to the concept of superconducting rings, I can't approach ...
- 21
11
votes
2
answers
5k
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Relativistic drift velocity of electrons in a superconductor?
Is there a formula for the effective speed of electron currents inside superconductors?
The formula for normal conductors is:
$$ V = \frac{I}{nAq}$$
I wonder if there are any changes to this ...
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