A Magnetic Levitation Train Uses the Meissner Effect to Propel

Multiple Choice

A magnetic levitation train uses the Meissner effect to propel the train along magnetic rails. Which of these facts relating to superconductors are true. Please select all that apply.

A) Superconductors are diamagnetic.
B) No matter the temperature, superconductors exhibit the Meissner effect.
C) Electrons move in pairs through the lattice.
D) The Meissner effect occurs at low temperature when the superconductor is below its critical temperature.