Question
Question: Pieces of aluminium (Al) and germanium (Ge) are cooled from T<sub>1</sub>K to T<sub>2</sub>K. The re...
Pieces of aluminium (Al) and germanium (Ge) are cooled from T1K to T2K. The resistance of –
A
Each of them increases
B
Each of them decreases
C
Aluminium increases and that of germanium decreases
D
Aluminium decreases and that of germanium increases
Answer
Aluminium decreases and that of germanium increases
Explanation
Solution
Aluminium has a ® Positive
Germanium has a ® Negative