# Questions tagged [superconductors]

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### Capacitor discharge through super conductor

Terminals of a charged capacitor, When connected by a conductor wire When connected by a superconductor What happens to destructive energy? I'm A / L physics teacher and this was a question asked ...
146 views

### Current and voltage relationship for superconductors

Before superconductors enter our everyday life, we must figure out a way to relate their voltage to current. For example, how would a circuit of two superconducting lamps in series behave? What if ...
1 vote
92 views

### Circuit simplification containing transmission lines, assuming a high quality factor

I am trying to digest the paper of M.S Khalil et al. 2012(1) on asymmetric resonator transmission (in superconducting devices). In it, early on, a resonator circuit coupled to a transmission line is ...
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### What would happen if a superconducting power line were hit by lightning?

I recently read an article on EETimes, discussing superconducting power lines to increase transmission efficiency by 5-10% due to nearly zero ohmic resistance. They state that normal power lines ...
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### Can there exist an arrangement of charge densities that creates a loop in the electric field lines of force?

Can there exist an arrangement of charge densities that creates a loop in the electric field lines of force? In this answer, a poster writes: Note 2 5/8: superconducting loop A uniformly perfectly ...
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### What happens to parasitic capacitance and inductance in a superconductor?

Do the parasitics also become [more] ideal? Or are all changes solely due to the perfect conduction? If not, how are the parasitics affected? Such basic information seems necessary to engineer any ...
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### Can a 'superconductor battery' , theoretically at least, last forever? Even if it is being used? [closed]

One of the amazing 'killer apps' of a cheap, non-toxic, high-temperature superconductor is storing electrical energy in a large current that loops around indefinitely. If this could be scaled down, it ...
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### How would superconducting circuits save a lot of power in a small electric car?

From the bottom of the New Scientist article called , 'The superconductor breakthrough that could mean an energy revolution.': Something like 10 per cent of electrical power is lost in long-distance, ...
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### Why can't superconducting inductors be used in LC filter design？

If I replace the copper wire of the coil with superconducting material, what will be the effect on the design of the passive LC filter?why superconducting cant design?
1 vote
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### How can electrons flow through superconductive material

I am a little confused. Metals has enormous number of free electrons but low carrier mobility. It means that electrons are moving slowly but large amount simultaneously. Lets say you pass current ...
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### Superconductors vs Ideal conductors

I have always assumed superconductors and ideal conductors as the same thing, but recently I found out that they are not. I tried to look up their differences on the internet, but I got only mixed up ...
274 views

### How do superconductors avoid breaking Kirchoff's Voltage Law?

So, let's imagine that you've got a superconductive voltage source (e.g. a wind turbine) hooked up to a loop of superconductive wire to form a circuit. Kirchoff's Voltage Law states that the sum of ...
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### For superconducting inductors, does the "magnetic current" flowing in the ferrite of an inductor suffer from "magnetic resistance"?

In this answer to "Inductor made out of super conductors", the experiences recounted included "ramping up the inductor" or "charging it up". Absolutely fascinating is ...
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### Inductor made out of super conductors

I have been thinking about an inductor made out of superconductors, would it work? How would it affect the total inductance compared to a normal inductor? Would it be possible to calculate such a ...
108 views

### How would a NOT gate be implemented by Josephson Junctions

I'm interested in learning how Josephson Junctions can be utilized to create invertible logic gates. To me it's not clear how the Junctions provide any logical capability (they simply allow for a ...
138 views

### Real Power or Reactive Power in Superconducting Motors?

My circuits class is teaching that in AC power, there are two kinds of loads. One is a resistive load, with absorbs power at all times. The other is a reactive load, which absorbs zero average power. ...
1 vote
729 views

### What happens to a computer as it is cooled towards absolute zero?

What happens to the behavior of a conventional circuit using conventional components as it is cooled towards absolute zero? To make this question more relatable: What would happen as we cool a modern ...
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### Josephson Junctions: Difference between X and X enclosed by box (☒), in circuit diagrams?

In circuit diagrams, Josephson Junctions are sometimes given as an X and sometimes as an X with a box around it . What is the ...
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### When high frequency current goes through a superconductor, does it still radiate off like it would with copper?

I've been thinking about the skin effect and that got me thinking: When high frequency current goes through a superconductor, does it still radiate off like it would with copper?
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1 vote
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### Does the formula v=Ldi/dt apply to materials with zero resistence, such as superconductors?

I've been trying to find information about the formula $v = L \cdot \frac{di}{dt}$, it seem to have something to do with voltage drop, and I know voltage drop is caused by resistance, so would a ...
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