Using your phone's internet browser
go to:  qna.rediff.com
Click and drag this link to
the Home icon in your browser.
Q.

What is a Superconductor?

Asked by Sumeet Goel, 30 Apr '09 11:23 am
  Invite a friend  |  
  Save  |  
 Earn 10 points for answering
Answer this question  Earn 10 points for answering    
4000 characters remaining  
  
    
Keep me signed inNew User? Sign up

Answers (18)

 
1.

A superconductor is a substance which conducts an electric current with zero resistance. Superconduction is a phase state (like the liquid and solid states of the water); as such, it depends on the temperature among other variables. The temperature where the transition takes place is the critical temperature
Answered by stanleyrobey, 30 Apr '09 11:29 am

 
  
Report abuse
Useful
 (7)
Not Useful
 (4)
Your vote on this answer has already been received
2.

Superconductivity is a phenomenon occurring in certain materials generally at very low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect). Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It cannot be understood simply as the idealization of \"perfect conductivity\" in classical physics.
Answered by sudesh, 30 Apr '09 11:44 am

 
  
Report abuse
Useful
 (7)
Not Useful
 (1)
Your vote on this answer has already been received
3.

At a critical temparature where the resistance of a substance becomes zero
Answered by Parthapratim Chakravorty, 30 Apr '09 11:25 am

 
  
Report abuse
Useful
 (7)
Not Useful
 (1)
Your vote on this answer has already been received
4.

Superconductivity is a phenomenon occurring in certain materials generally at very low temperatures, characterized by exactly zero electrical resistance and the exclusion of the interior magnetic field (the Meissner effect). Like ferromagnetism and atomic spectral lines, superconductivity is a quantum mechanical phenomenon. It cannot be understood simply as the idealization of \"perfect conductivity\" in classical physics.

The electrical resistivity of a metallic conductor decreases gradually as the temperature is lowered. However, in ordinary conductors such as copper and silver, impurities and other defects impose a lower limit. Even near absolute zero a real sample of copper shows a non-zero resistance. The resistance of a superconductor, despite these imperfections, drops abruptly to zero when the material is cooled below its \"critical temperature\". An electric current flowing in a loop of superconducting wire can persist indefinitely with no power source.
Answered by Gaurav Jain, 30 Apr '09 11:21 pm

 
  
Report abuse
Useful
 (6)
Not Useful
 (0)
Your vote on this answer has already been received
5.

Conducts electricity
Answered by srinivas satyanarayan, 30 Apr '09 11:25 am

 
  
Report abuse
Useful
 (4)
Not Useful
 (4)
Your vote on this answer has already been received
6.

Superconductor is nothing but the ability of some metals, alloys, and ceramics to conduct electric current with negligible internal resistance at temperatures near absolute zero and, in some cases, at higher temperatures
Answered by suribabu komakula komakula, 30 Apr '09 09:36 pm

 
  
Report abuse
Useful
 (5)
Not Useful
 (1)
Your vote on this answer has already been received
7.

A superconductor is a material showing perfect conductivity and Meissner
effect below a critical temperature. Meisner\'s effect is situation where the magnetc field fail to exist within that particular line.
Answered by Lucky, 30 Apr '09 11:29 am

 
  
Report abuse
Useful
 (4)
Not Useful
 (3)
Your vote on this answer has already been received
8.

Electricity
Answered by mohd yousuf, 30 Apr '09 06:08 pm

 
  
Report abuse
Useful
 (3)
Not Useful
 (3)
Your vote on this answer has already been received
9.

Conducts electricity
Answered by prashant prashar, 30 Apr '09 03:21 pm

 
  
Report abuse
Useful
 (3)
Not Useful
 (3)
Your vote on this answer has already been received
10.

Conducts electricity
Answered by jameel ahmed, 30 Apr '09 01:26 pm

 
  
Report abuse
Useful
 (3)
Not Useful
 (3)
Your vote on this answer has already been received
Previous

Ask a Question

Get answers from the community

600 characters remaining

Related Answer

Q.
A

Even if this Government comes to power in Assembley election,it will reverse the fare.DMK is expert in manipulation...more

Answered by anantharaman