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will the invention of room temperature superconductor will make the current understanding of register useless?
Asked by ojasgarg96 | 25 Dec, 2022, 10:26: AM
answered-by-expert Expert Answer
Three parameters are important for superconductor
 
(1) operating temeprature
 
(2) Critical current density
 
(3) Critical magnetic field
 
At present operating temperature or critical temperature is very low .
Critical temperature of Niobium-Titanium alloy superconductor is around 9 K.
 
Critical current density of Niobium-Titanium alloy superconductor wirking at 9K temperature
 
is 1000 A/mm2 where as current density in  copper working at room temperature  is 5 A/mm2
 
High temperature superconductors made up of Copper oxides with impurities of ceramic materials like
Yttrium , Lanthanum , strontium etc are showing superconducting behaviour upto 100 K temperature but
their critical current is lower than copper.
 
Hence if we get superconductor working at room temperature and
critical current density greater than copper by two to three orders , then high current devices like
electromagnets used for medical application will become compact .
 
Even if the superconductor is discovered with high critical temeprature and critical current, it will be used
in high current applications like electromagnet due to cost .
 
For domestic lighting and low current applications , copper wire will be used
 


 

Answered by Thiyagarajan K | 25 Dec, 2022, 15:45: PM

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