Apiece of copper and another of germanium are cooled from room temperature to 77 K. The resistance of
A. each of these decreases
B. copper strip increases and that of germanium decreases
C. copper strip decreases and that of germanium increases
D. each of these increases.
Answer:C
Apiece of copper and another of germanium are cooled from room temperature to 77 K. The resistance of
A. each of these decreases B. copper strip increases and that of germanium decreases C. copper strip decreases and that of germanium increases D. each of these increases.