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Electrical conductivies of Ge and Na are...

Electrical conductivies of Ge and Na are `sigma_(1)` and `sigma_(2)` respectively. If these substances are heard, then

A

`sigma_(1)` decreases and `sigma_(2)` increases

B

both `sigma_(1)` and `sigma_(2)` decreases

C

both `sigma_(1)` and `sigma_(2)` increases

D

`sigma_(1)` increases and `sigma_(2)` decreases

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The correct Answer is:
D
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ALLEN -SEMICONDUCTORS-Part-3(Exercise-2)
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  2. Current in the circuit will be

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  3. Electrical conductivies of Ge and Na are sigma(1) and sigma(2) respect...

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  4. What is the voltage gain in a common emitter amplifier where input res...

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  5. The current of transistor in common emitter mode is 49. The change in ...

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  6. In the CB mode of a transistor, when the collector voltage is changed ...

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  7. Zener diode is used as

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  8. Consider an n-p-n transistor amplifer in common-emitter configuration....

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  9. A transistor is used in common emitter mode as an amplifier. Then (A...

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  10. An electric field us applied to a semiconductor.Let the number of char...

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  11. Two identical p-n juctions may be connected in series with a battery i...

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  12. In an n-p-n transistor circuit, the collector current is 20 mA. If 90 ...

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  13. In sample of pure silicon 10^(13) "atom"//cm^(3) is mixed of phosphoru...

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  14. Mobility of electron in N-type Ge is 5000 cm^(2)//"volt" sec and condu...

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  15. A diode made forward biased by a two volt battery however there is a d...

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  16. Forbidden energy gap of Ge is 0.75eV, maximum wave length of incident ...

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  17. In the figure, the input is across the terminals A and C and the o...

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  18. An oscillator is nothing but an amplifier with

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  19. In the following common emitter configuration an NPN transistor with c...

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