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(a) In the following diagram 'S' is a se...

(a) In the following diagram 'S' is a semiconductor . Would
you increase or decrease the value of R to keep the
reading of the ammeter A constant when S is heated ?
Given reason for you answer .
(b) Draw the circuit diagram of photodiode and explain
its working . Draw its I-V characteristics.

Text Solution

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Value of R should be increased with the increase in temperature of semiconductor as circuit resistance decreases and current tends to increase.
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ALLEN-SEMICONDUCTORS-Part-3(Exercise-4)
  1. (a) In the following diagram 'S' is a semiconductor . Would you inc...

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  2. At absolute zero , Si acts as

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  3. The energy band gap is maximum in

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  4. The part of the transistor which is heavily doped to produced large nu...

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

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  6. The difference in the variation of resistance with temperature in a me...

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  7. In the middle of the depletion layer of a reverse-biased p - n junctio...

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  8. Consider telecommunication through optical fibers. Which of the follow...

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  9. When a n-p-n transistor is used as an amplifier, then

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  10. For a transistor ampliflier in common emiter configuration for load im...

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  11. A piece of copper are another fo germanium are cooled from room temper...

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  12. When p-n junction diode is forward biased, then

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

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  14. In a common base amplifier the phase difference the input signal volta...

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  15. If a full wave rectifier circuit is operating from 50 Hz mains, the fu...

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  16. In a common-base of mode of transistor, the collector current is 5.488...

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

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  18. If the ratio of the concentration of electrons and that of holes in a ...

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

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  20. In the following, which one of the diodes is reverse biased ?

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

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