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love history [14]
3 years ago
15

The temperature of a superconductor is gradually lowered. At the critical temperature, how does the resistivity of the supercond

uctor change?
it reaches a constant positive value
it suddenly drops to zero
it begins a gradual decrease
it experiences a spike to its highest value
Physics
1 answer:
azamat3 years ago
5 0

Answer:

Second Option: it suddenly drops to zero

Explanation:

Superconductors are resistance free materials that enable (allow) <u>electricity conduction (i.e. electron transportation between atoms)</u>.

As the superconductor temperature is gradually lowered, eventually a Critical Temperature is reached, where the <u>superconductor electrical resistivity</u> suddenly drops to zero. Such drop is so fast, that can be described as a complete matter-phase transition. This is in contrast with typical conductors,<em> where with gradually decreasing temperature there is also a gradually decreasing resistivity (which is also true at temperatures of near absolute zero). </em>

Thus the correct answer is the Second Option: it suddenly drops to zero

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