What is the defining electrical property of a superconductor below its critical temperature?

What is the Meissner effect?

What is meant by the critical temperature of a superconducting material?

A superconducting wire carries \(12\,\mathrm{A}\) with resistance \(0\). What is the ideal dc power dissipated as heat?

A current persists in a superconducting ring after the battery used to start it is removed. Why is this possible?

What are the three common critical limits that can destroy superconductivity?

A material has \(T_c=9.2\,\mathrm{K}\). Is it superconducting at \(12\,\mathrm{K}\), assuming the field and current are below critical values?

A superconducting wire has critical current density \(J_c=5.0\times10^8\,\mathrm{A\,m^{-2}}\) and cross-sectional area \(2.0\times10^{-8}\,\mathrm{m^2}\). Find its critical current.

What is the difference between type-I and type-II superconductors?

What are Cooper pairs?

Why does zero resistance not mean that there is no current in a superconductor?

A superconducting loop has inductance \(0.20\,\mathrm{H}\) and carries \(3.0\,\mathrm{A}\). How much magnetic energy is stored?

What is magnetic flux quantization in a superconducting loop?

Calculate the superconducting flux quantum using \(h=6.63\times10^{-34}\,\mathrm{J\,s}\) and \(e=1.60\times10^{-19}\,\mathrm{C}\).

Why can a magnet levitate above a superconductor?

What is flux pinning in a type-II superconductor?

A superconducting magnet is useful in MRI machines. Which superconducting property is most important for this application?

How does the Meissner effect distinguish a superconductor from an idealized perfect conductor?

What is the London penetration depth?

A sample is below \(T_c\) but is placed in a magnetic field larger than its critical field. What happens?