Q
A piece of copper and a piece of germanium are cooled from the room temperature down to 77 K.
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A
A. The resistance of each of them increases.
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B
B. The resistance of each of them decreases.
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C
C. The resistance of copper decreases and that of germanium increases.
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D
D. The resistance of copper increases and that of germanium decreases
Correct Answer:
C. C. The resistance of copper decreases and that of germanium increases.
