Advertisements
Advertisements
प्रश्न
The graph of potential barrier versus width of depletion region for an unbiased diode is shown in graph A. In comparison to A, graphs B and C are obtained after biasing the diode in different ways. Identify the type of biasing in B and C and justify your answer
| ‘A’ | ‘B’ | ‘C’ |
 |
 |
 |
उत्तर
B - reverse biased
In the case of a reverse-biased diode, the potential barrier becomes higher as the battery further raises the potential of the n side.
C - forward biased
Due to the forward bias connection, the potential of P side is raised and hence the height of the potential barrier decreases.
APPEARS IN
संबंधित प्रश्न
Draw its I – V characteristics of photodiode
With reference to a semiconductor diode, what is meant by:
(i) Forward bias
(ii) Reverse bias
(iii) Depletion region
Use a transistor as an amplition
In Figure, Vo is the potential barrier across a p-n junction, when no battery is connected across the junction ______.
In the circuit shown in figure, if the diode forward voltage drop is 0.3 V, the voltage difference between A and B is ______.
Consider an npn transistor with its base-emitter junction forward biased and collector base junction reverse biased. Which of the following statements are true?
- Electrons crossover from emitter to collector.
- Holes move from base to collector.
- Electrons move from emitter to base.
- Electrons from emitter move out of base without going to the collector.
Consider an npn transistor with its base-emitter junction forward biased and collector base junction reverse biased. Which of the following statements are true?
- Electrons crossover from emitter to collector.
- Holes move from base to collector.
- Electrons move from emitter to base.
- Electrons from emitter move out of base without going to the collector.
Describe briefly the following term:
breakdown voltage in reverse biasing
With reference to a semiconductor diode, define the depletion region.
Draw a labelled characteristic curve (l-V graph) for a semiconductor diode during forward bias.
