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Which of the following statements regarding superconducting materials are correct when a large number of metals become superconducting below a temperature? 1) The resistivity ρ of the superconductor is zero. 2) The magnetic flux density B vanishes through the substance. 3) Ferromagnetic and Antiferromagnetic metals are good examples of superconducting materials.

Which of the following statements regarding superconducting materials are correct when a large number of metals become superconducting below a temperature? 1) The resistivity ρ of the superconductor is zero. 2) The magnetic flux density B vanishes through the substance. 3) Ferromagnetic and Antiferromagnetic metals are good examples of superconducting materials. Correct Answer 1 and 2 only

At very low temperatures, some metals acquire zero electrical resistance and zero magnetic induction, the property known as superconductivity.

The characteristic temperature at which a metal becomes superconducting depends on:

  • The strength of the magnetic field
  • Whether the field is applied externally or is the result of current used to measure the resistance.

 

Properties:

  • It possesses zero resistivity
  • The magnetic flux density inside the material is zero
  • It exhibits the nature of diamagnetism

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