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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!
What else can I help you with?
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.
Is A superconductor is A conductor having zero resistance?
Yes, a superconductor is a material that can conduct electricity without any resistance at very low temperatures. This means that once a current is applied, it can flow indefinitely without any loss of energy due to resistance.
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 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.
What is the surprising thing that happens in a superconductor?
In a superconductor, electrical resistance drops to zero when cooled below a critical temperature, allowing electrical current to flow without any loss of energy. This phenomenon, known as superconductivity, is surprising because it defies conventional understanding of electrical conductivity in materials.
What type of wire would have the least resistance?
Superconductor wire would have the least resistance. Superconductors have zero electrical resistance when cooled to very low temperatures, allowing for an efficient flow of electrical current without any loss of energy.
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 resistance does a superconductor have?
An ideal superconductor has exactly zero losses, thus resistance is zero.
What makes a super conductor?
A superconductor is a material that can conduct electricity without any resistance when cooled below a certain critical temperature. This results in zero electrical resistance and allows a current to flow without losing energy to heat.
What is the role of resistance in an electric circuit and how does it affect the flow of current?
Resistance in an electric circuit is the opposition to the flow of electric current. It is measured in ohms. Resistance affects the flow of current by reducing it, as higher resistance leads to lower current flow. This relationship is described by Ohm's Law, which states that current is inversely proportional to resistance in a circuit.
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 does a variable resistor do and how does it affect the flow of electric current in a circuit?
A variable resistor is a component that can change its resistance value. By adjusting the resistance, it can control the flow of electric current in a circuit. Increasing the resistance reduces the current flow, while decreasing the resistance increases the current flow. This allows for precise control of the current in a circuit.
What is a material that loses its resistance to electrical flow at very low temperatures?
A material that loses its resistance to electrical flow at very low temperatures is called a superconductor. This phenomenon is known as superconductivity, where the material exhibits zero electrical resistance below a critical temperature.
