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Question
A piece of copper and another of germanium are cooled from room temperature to 77K. The resistance of ______.
Options
each of these decreases
copper strip increases and that of germanium decreases
each of these increases
copper strip decreases and that of germanium increases
MCQ
Fill in the Blanks
Solution
A piece of copper and another of germanium are cooled from room temperature to 77K. The resistance of copper strip decreases and that of germanium increases.
Explanation:
When the temperature drops, the resistance of copper (a conductor) falls while the resistance of germanium (a semiconductor) rises.
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Integrated Circuits
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