Advertisements
Advertisements
Question
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’ |
 |
 |
 |
Advertisements
Solution
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
RELATED QUESTIONS
Explain the working of P-N junction diode in forward and reverse biased mode.
Plot a graph showing variation of current versus voltage for the material GaAs ?
Diffusion in a p-n junction is due to ______.
The drift current in a p-n junction is from the ______.
Depletion layer in p - n junction diode consists of
Avalanche breakdown is due to ______.
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.
Draw V-I characteristics of a p-n Junction diode.
Differentiate between the threshold voltage and the breakdown voltage for a diode.
Explain the formation of the barrier potential in a p-n junction.
