661PhysicsMedium
A piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.
AThe resistance of copper increases and that of germanium decreases
BThe resistance of each of them increases.
CThe resistance of each of them decreases.
DThe resistance of copper decreases and that of germanium increases.
Correct answer
D. The resistance of copper decreases and that of germanium increases.
Explanation
The resistance of copper decreases and that of germanium increases. is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.