A physics student is presenting a report on a material that can conduct an electrical current with no resistance. She explains that the uses of this material are limited since the material has to be very cold when used. Which best describes what the student’s report was about?

A material that carries electrical current with no resistance is a superconductor. Superconductors generally need to be cooled to very low temperatures, which limits some of their uses. Therefore, the report was about superconductivity.

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