Answers Physics Solid State Physics — QuizQuestion 9

9

QuizMultiple Choice

Solid State Physics — Quiz

Question 9 • Physics

Which statement best defines the term "superconductivity”?

Answer

A

the ability of solid metals to conduct electricity with low resistance in the presence of a magnetic field

B

the ability of certain substances at very low temperatures to conduct electricity with low resistance

C

the ability of solid metals to conduct electricity in the presence of a magnetic field

D

the ability of certain substances at very low temperatures to conduct electricity with no resistance

Explanation

Superconductivity occurs when certain materials are cooled below a critical temperature and their electrical resistance drops to zero. Choice D states this defining property. Low resistance, as in choice B, is not enough: a superconductor has no electrical resistance.

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