Calculate the critical current through a long thin superconducting wire of radius 0.5 mm. The critical magnetic

A superconductor tin has a critical temperature of 3.7 K in zero magnetic field and a critical field of 0.0306 T

For mercury of mass number 202, Tc is 4.2 K. Find the transition temperature for its isotope of mass number 200

The penetration depth is the __________ where the current drops to 1/e times of its value at the surface.

The following is the second London equation