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.

Question

Quizplus · Accepted Answer

A) Superconductors are indeed diamagnetic, meaning they will repel a magnetic field.
B) This statement is not true. For a material to exhibit superconductivity, it must be below its critical temperature. Above this temperature, the material loses its superconductivity and will not exhibit the Meissner effect.
C) This statement is true. Electrons in a superconductor are paired up, known as Cooper pairs. These pairs can move through the lattice without resistance, giving rise to superconductivity.
D) This statement is also true. The Meissner effect occurs when a superconductor expels any magnetic field from its interior when it is below its critical temperature.

A Magnetic Levitation Train Uses the Meissner Effect to Propel