The resistivity of certain metals becomes zero at Select one: a. Very low temperatures b.Very high temperatures c. Room temperatures d. 0
Riya Andrews
Answered question
2022-10-09
Select one:
a. Very low temperatures
b.Very high temperatures
c. Room temperatures
d. 0
Answer & Explanation
Tanya Anthony
Beginner2022-10-10Added 5 answers
Introduction:
The resistivity of a material is a measure of the resistance of a particular dimension of a specific material to electrical conduction.
Absolute zero temperature does not exist.
Step 2
Hence, when the temperature is brought very low and close to 0 [K], the resistivity of some materials becomes zero and they conduct completely and are called as superconductors.
In superconductors the the resistance drops to zero when the material is cooled below its certain critical temperature.
For example, Mercury at a critical temperature of 4.2 [K], becomes a superconductor.
Hence answer is Option a. Very low temperatures.
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