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How does current flow in a superconductor if there is no resistance?
Wiki User
∙ 13y ago
Interestingly enough, the mechanism of superconductivity is not completely understood. Since the discovery of this phenomenon by Heike Kamerlingh Onnes in 1911, we've still to explain it away. When a superconductive material is cooled below the superconducting transition temperature for that material, its resistance disappears. The material then becomes superconductive. Why? We have some ideas, so let's look at them.
Some strides have been made in an attempt to explain the nature of superconductivity, but we're still not there. Superconductors can "lock out" magnetic fields, and that should be considered. We see the idea of thermodynamic modeling used along with the application of ideas concerning superfluids and condensed matter. It is thought that electrons might form pairs to become boson-like. But the topic is still open and investigators still wonder what's going on.
Use the link below to begin to understand what we do know and what is suggested. From there an investigator might be able to make the leap in understanding to actually explain what happens in superconductive materials. It isn't a certainty, but there may be a Nobel Prize within reach of the individual or individuals who explain away this now nearly 100-year old phenomenon!
Wiki User
∙ 13y ago
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How will you describe the graph of resistance against current?
If resistance is high that time the current flow is low. Bcoz current always flow through the low resistance path.
Should you increase voltage or resistance to increase flow in a circuit?
To increase (current) flow in a circuit you increase voltage (or decrease resistance). Ohm's Law: Current = Voltage divided by resistance
What is electronic resister?
Electronics resistor are a basic passive element it oppose the flow of current . the opposition depend upon the value of that resistance high value resistance will only able to flow some few amount of current through them. but low value of resistance allow to flow large current through them.
Why must you make current flow through the meter in order to measure it?
You don't. ...unless you want to directly measure the current in a circuit branch. That's the purpose of an ammeter. You can also use a volt meter if you know the resistance of a resistor in that branch to determine current (assuming DC circuit here) - current = voltage / resistance. This may be more useful for circuitry that is on a breadboard, since inserting an ammeter may not be practical.
What effect does decreased resistance have on a circuit?
resistance is the opposition to the flow of an electric current, therefore the current will decrease as the resistance increases. Resistance also creates heat. This is how the light globes in a circuit light up.
What is difference between semiconductor and superconductor?
A semiconductor only allows some electrons to flow across its junction. It has some resistance, in fact more resistance than a conductor but less than an insulator. A superconductor has no resistance.
Does resistance depend upon current?
The higher the resistance the lower the current flow. It restricts the flow of electrical current. The resistance will not depend upon the current. The current flow will depend on the resistance.
What flows indefinitely in a superconductor?
A current of electricity can flow at the same strength for an indefinitely long time in a superconductor but only for as long as the superconductor is held below its critical temperature. If its temperature were allowed to rise to its critical temperature - or higher - the material would no longer behave as a superconductor: it would acquire resistivity which would restrict the flow of current.
Is A superconductor is A conductor having zero resistance?
Yes, a superconductor has zero resistance.
What resistance does a superconductor have?
An ideal superconductor has exactly zero losses, thus resistance is zero.
How will you describe the graph of resistance against current?
If resistance is high that time the current flow is low. Bcoz current always flow through the low resistance path.
What makes zinc a superconductor?
a superconductor is a conductor that is at absolute 0 in temperature allowing free flow of electrons without slowing them down because of no resistance any conductor in theory can become a superconductor but has to be brought down to a very low temperature typically 0 kelvins
What happens to current flow when the resistance is higher than normal?
For a specific voltage, current flow is inversely proportional to resistance.
Does resistance flow through a circuit?
No. Resistance does not flow. Resistance is the characteristic of a material that resists the movement of electrons and thus the flow of electrical current.
A material that has no electrical resistance?
That's a "superconductor".
Does resistance to electrical current flow have the same meaning as resistance to fluid flow?
no, a better analog is reactance
Resistance to current flow is measured in?
Ohms.
