Superconductor and its reality.

The superconductor which we heard is the type of conductor having negligible or about to zero resistance. The pure superconductor in is not found freely in nature. When the substance is cooled less then or equal to critical temperature it behaves like a superconductor as we know about Mercury(Hg).

As we all know that in superconductor the resistance is negligible or you can say that no resistance. According to our theory in superconductor the energy gap between valence band and conductance band is negligible because these two band are very closed to each other i.e the electron of valence band can go freely in conductance band and similarly converse is also true.And finally these band will be become a single band in which electron can move freely

The great misconceptions is that, when we use superconductor instead of Conductor and passed electric charge with help of electric field for a second, the light bulb doesn't off for long lasting.the thing to be noted is that the superconductor doesn't acquire any resistance ideally. But when we use light bulb it will provide some resistance to glow, since we can make the light glowing(for some more time) after electric field is stopped. It is because the resistance offered by light can deaccelerate the electron through the bulb, By deaccelerating the electrons results to stop the moving electrons.

  

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