SemiconductorEasy
Question
A piece of copper and another of germanium are cooled from room temperature to 77 K, the resistance of
Options
A.each of them increases
B.each of them decreases
C.copper decreases and germanium increases
D.copper increases and germanium decreases.
Solution
Copper is metallic conductor and germanium is semiconductor therefore as temperature decreases resistance of good conductor decreases while for semiconductor it increases.
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