Q: Superconductors expel a magnetic field from their interior. what is this phenomenon known as?


Read this paragraph and choose the correct option from the provided answers:

Summary Superconductors are solids that at low temperatures exhibit zero resistance to the flow of electrical current, a phenomenon known as superconductivity. The temperature at which the electrical resistance of a substance drops to zero is itssuperconducting transition temperature (Tc). Superconductors also expel a magnetic field from their interior, a phenomenon known as the Meissner effect. Superconductivity can be explained by the BCS theory, which says that electrons are able to travel through a solid with no resistance because they couple to form pairs of electrons (Cooper pairs). Hightemperature superconductors haveTc values greater than 30 K.

 Choices:

- weissenberg effect

- eibner effect

- lauer effect

- meissner effect


A:
meissner effect