How do you calculate power in a superconductor?

A superconductor has zero resistance. Therefore, since V = IR, the voltage drop across the superconductor is given by V = 20000*0 = 0V. So 0 volts, and since Power is given by P = VI, P = 0*20000 = 0W.

What is the order of energy gap of superconductor?

Since average thermal energy goes as kT, and at room temperature that is about 25 meV, at a typical superconducting transition temperature of an element, say 3 K, the average thermal energy is 1/100 of this or 0.25 meV. So the energy gap must be of this size or larger. So, order of magnitude, 0.1 to 1.0 meV.

How is superconducting electron density calculated?

The first London equation is, d⃗jsdt=nse2me⃗E. d j → s d t = n s e 2 m e E → . Here ⃗js j → s is the current density of the superconducting electrons, ns is the density of superconducting electrons, ⃗E is the electric field, e is the electrons charge and me is the electron mass.

What is the entropy of a superconductor?

Superconducting carriers are in a condensed state, they are at the lowest energy state and they carry no entropy. As a result, there is no scattering for the superconducting carriers and there is no resistance for them – they cause the phenomenon of superconductivity.

What are super conductors?

A superconductor is a material that achieves superconductivity, which is a state of matter that has no electrical resistance and does not allow magnetic fields to penetrate. An electric current in a superconductor can persist indefinitely. Superconductivity can only typically be achieved at very cold temperatures.

What are superconductors used for in physics?

Suggested uses for superconducting materials include medical magnetic-imaging devices, magnetic energy-storage systems, motors, generators, transformers, computer parts, and very sensitive devices for measuring magnetic fields, voltages, or currents.

What is superconducting gap?

For superconductors the energy gap is a region of suppressed density of states around the Fermi energy, with the size of the energy gap much smaller than the energy scale of the band structure.

What is superconducting state?

In Superconducting state, the superconducting material shows the zero electric resistance (infinite conductivity). When the sample of a superconducting material is cooled below its critical temperature/transition temperature, its resistance reduces suddenly to zero. For example Mercury shows zero resistance below 4k.