can a superconductor be created by passing dc current thru a conductor?

Question

explain me the conditions of creating a superconductor.wat is d latest advancement in that field

Answer 1

Only certain materials can support superconductivity.

You simply cool the material below its critical temperature (which is usually lower than 10 K and rarely as high as 70 K, the temperature of liquid nitrogen). At the critical temperature the electrons in the matieral pair via exchange of virtual phonons to for a bose einstein condensate, and the resistance vanishes.

This is not at all the same as the way conductivity changes with temperature usually. It occurs because the paired electrons behave as bosons and do not scatted as normal electrons (which are fermions) would.

Answer 2

Superconductors are made from specific materials which have certain properties, some man made and some natural. Certain materials, when cooled to a specific low temperature, do not have any resistance. This means that, theoretically, if you were to induce a current in a ring-shaped superconductor the current would continue forever. Normally, a piece of wire for example has resistance which causes the wire to heat up as the current is stopped by friction (i.e. the electrons which make up the current are crashing into the atoms that make up the wire), so the current has to be constantly applied. There are many more facinating effects known about superconductors such as levatating magnets.

Answer 3

a superconductor is created by cooling a material until the resistance is at a minimum

Answer 4

The Conductor has to be cooled
almost to Absolute Zero.

Answer 5

there's a magnetic field interior the cables on your place , even nonetheless that's merely too small to attraction to steel , attempt putting a compass close to a cable wherein present day is flowing , and it will deflect , while the cable is wound around the the conductor the magnetic field will boost