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The temperature of germanium is decrease...

The temperature of germanium is decreased from room temperature to 100 K, the resistance of germanium

A

decreases

B

increases

C

remains unaffected

D

depends on external conditions

Text Solution

Verified by Experts

The correct Answer is:
B
Germanium is a semiconductor and possesses negative temperature coefficient. Therefore, when temperature of germanium is decreased, it resistance increases.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SEMICONDUCTORS-Exercise 1 ( TOPICAL PROBLEMS )
  1. A intrinsic semiconductor at a absolute zero of temperature behaves as

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  2. Would there be any advantage to adding n-type or p-type impurities to ...

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  3. The temperature of germanium is decreased from room temperature to 100...

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  4. The contribution in the total current flowing through a semiconductor ...

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  5. Which one of the following statements is false ?

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  6. The forward biased diode connection is

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  7. Reverse bias applied to a junction diode

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  8. In a reverse biased p-n junction, when the applied bias voltages is eq...

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  9. In a p- n junction diode not connected to any circuit,

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  10. When LED is forward biased, then

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  11. A full wave rectifier uses two diodes with a load resistance of 100 Om...

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  12. In forward biasing of the p-n junction:

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  13. In a P-N junction diode :

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  14. In the middle of the depletion layer of a reverse - biased p - n junc...

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  15. In a semi conductor diode , the barrier potential offers opposition to...

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  16. For germenium crystal, the forbidden energy gap in joules is

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  17. A 220 V AC supply is connected between points A and B. What will...

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  18. If an alternating voltage is applied across a diode in series with a l...

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  19. In half - wave rectification, what is the output frequency, if the inp...

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  20. The p-n junction which generates an emf when solar radiation falls on ...

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