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When npn transistor is used as an ampli...

When npn transistor is used as an amplifler

A

electrons move from collector base

B

holes move from emitter to base

C

electrons move from base to collector

D

holes move from base to emitter

Text Solution

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The correct Answer is:
C
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MOTION-ELECTRONICS - SEMI CONDUCTOR-EXERCISE - 3
  1. The difference in the variation of resistance with temperature in a me...

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  2. A strip of copper and another of germanium are cooled from room tempe...

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  3. When npn transistor is used as an amplifler

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  4. A piece of copper and another of germanium are cooled from room temper...

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  5. The manifestation of band structure in solids is due to

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  6. When p-n junction diode is forward biased then

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  7. The electrical conductivity of a semiconductor increases when electrom...

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  8. In a full wave rectifier circuit operating from 50 Hz mains frequency ...

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  9. In a common-base amplifier, the phase difference between the input sig...

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  10. If the ratio of the concentration of electron to that of holes in a se...

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  11. A solid which is not transperent to visible light and whose conductivi...

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  12. In a common base mode of transistor, collector current is 5.488 mA for...

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  13. If the lattice constant of this semiconductor is decreased, then which...

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  14. In the following, which one of the diodes is reverse biased –

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  15. The circuit has two oppositely connected ideal diodes in parallel. Wha...

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  16. If a p-n junction diode, a square input signal of 10 V is applied as s...

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  17. Carbon , silicon and germanium have four valence electrons each . At r...

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  18. A working transitor with its three legs marked P, Q and R is tested us...

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  19. In the circuit below, A and B represent two inputs and C represents th...

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  20. a p -n juction (D) shown in the figure can act an a rectifier An alter...

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