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A strip of copper and another of germanium are colled from room temperature to 80 K. The resistance of
  • a)
    Copper strip decreases and that of germanium increases
  • b)
    Each of these increases
  • c)
    Each of these decreases
  • d)
    Copper strip increases and that of germanimum decreases
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A strip of copper and another of germanium are colled from room temper...
Copper is a conducter.. And germanium is a semiconductor..

With decrease in temperature resistance of conducter decreases and resistance of semiconductor increases...

So option a is correct
Free Test
Community Answer
A strip of copper and another of germanium are colled from room temper...
Effect of temperature on resistance of copper and germanium:
Effect of temperature on resistance is determined by the temperature coefficient of resistance (TCR) of the material. TCR is positive for copper and negative for germanium.

Explanation:

Copper strip:
- Copper has a positive TCR, which means its resistance decreases with increasing temperature.
- When the copper strip is cooled from room temperature to 80 K, its resistance will decrease.

Germanium strip:
- Germanium has a negative TCR, which means its resistance increases with increasing temperature.
- When the germanium strip is cooled from room temperature to 80 K, its resistance will increase.

Conclusion:
- Therefore, the resistance of the copper strip decreases while the resistance of the germanium strip increases when cooled from room temperature to 80 K. This is why option 'A' is the correct answer.
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A strip of copper and another of germanium are colled from room temperature to 80 K. The resistance ofa)Copper strip decreases and that of germanium increasesb)Each of these increasesc)Each of these decreasesd)Copper strip increases and that of germanimum decreasesCorrect answer is option 'A'. Can you explain this answer?
Question Description
A strip of copper and another of germanium are colled from room temperature to 80 K. The resistance ofa)Copper strip decreases and that of germanium increasesb)Each of these increasesc)Each of these decreasesd)Copper strip increases and that of germanimum decreasesCorrect answer is option 'A'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about A strip of copper and another of germanium are colled from room temperature to 80 K. The resistance ofa)Copper strip decreases and that of germanium increasesb)Each of these increasesc)Each of these decreasesd)Copper strip increases and that of germanimum decreasesCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A strip of copper and another of germanium are colled from room temperature to 80 K. The resistance ofa)Copper strip decreases and that of germanium increasesb)Each of these increasesc)Each of these decreasesd)Copper strip increases and that of germanimum decreasesCorrect answer is option 'A'. Can you explain this answer?.
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