Question

Consider the following statements for superconductivity:

1. Superconducting magnets capable of generating high fields with low power consumption are currently being employed in scientific test and research equipment.

2. One of the potential applications of superconducting materials is electrical power transmission through superconducting materials - power losses would be extremely low, and the equipment would operate at low voltage level.

3. Type II superconductors are preferred over type I for most practical applications by virtue of their higher critical temperatures and critical magnetic fields.

Which of the above statements is/are correct?

1. 1 only
2. 2 and 3 only
3. 3 only
4. 1, 2 and 3
5.

Answer 1

Correct Answer - Option 1 : 1 only

A superconducting magnet is an electromagnet made from coils of superconducting wire. They must be cooled to cryogenic temperatures during operation. In its superconducting state the wire has no electrical resistance and therefore can conduct much larger electric currents than ordinary wire, creating intense magnetic fields. Superconducting magnets can produce greater magnetic fields than all

A superconductor can be Type I, meaning it has a single critical field, above which all superconductivity is lost and below which the magnetic field is completely expelled from the superconductor; or Type II, meaning it has two critical fields, between which it allows partial penetration of the magnetic field through isolated points.

 These points are called vortices.