Q222
Super conductivity is a phenomenon in which the resistance of a substance
A.
increases with temperature
B.
decreases with temperature
C.
does not change with temperature
D.
becomes zero at very low temperature
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Super conductivity is a phenomenon in which the resistance of a substance becomes zero at very low temperature. 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 its superconducting transition temperature (T c).