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Because in superconductor wire, the wire used is gold as it has a low resistance and a high current value, and gold is not found in al huge abundant due to which it is expensive.

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Q: Why the superconductors you have today are expensive and uncommon?
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Why are scientists trying to make superconductors that can work at warmer temperatures?

Because refrigerating superconductors to the cryogenic temperatures needed by current ones is expensive, severely limiting the applications they are used in.Metallic superconductors need cooling to the temperature of liquid helium.Copper oxide ceramic superconductors need cooling to the temperature of liquid nitrogen.Room temperature superconductors, if they exist, would need little or no cooling.

What is a drawback to using superconductors?

They are usually quite expensive and require very low operating temperatures.

Which has the lowest resistance semiconductors superconductors insulator conductor?

superconductors, they have no resistance.

Why superconductors are not used often in everyday activities?

Because at present all superconductors must be super-cooled in a coolant such as liquid nitrogen to become superconductors.

Can you write a sentence using the word uncommon?

You just did but, " It is very uncommon that he didnt go to work today."

What are most modern high temperature superconductors made of?

Resistance decreases with the decrease of temperature. Superconductors are made by lowering the temperature.

Are teepees still used today?

Yes teepees are still used today by uncommon are unknown idians.

How expensive is silk cloth today?

Very expensive, like super expensive

What is the definition of low temperature supercoductors?

In a way, all currently existing superconductors are "low-temperature", but some more so than others. The traditional superconductors work up to about 20 K (or minus 253 Centigrade); more recent "high-temperature superconductors" work up to 100 K or so. 100 K is still minus 173 Centigrade, but it is much "hotter" than the traditional superconductors. The new "high-temperature" superconductors apparently work different than the old-fashioned ones; at least, the theory that explains the traditional superconductors fails to explain how the new superconductors work.

How are superconductors different from conductors?

In superconductors, no electricity is wasted because there is no resistance to the flow of electrons. In conductors any electricity not used, is wasted.

What has the author Franklin Curtis Mason written?

Franklin Curtis Mason has written: 'The tunnel effect in superconductors' -- subject(s): Superconductors

What has the author Anatoli Larkin written?

Anatoli Larkin has written: 'Theory of fluctuations in superconductors' -- subject(s): Fluctuations (Physics), Superconductors