Advertisements
Advertisements
प्रश्न
In the following diagram, is the junction diode forward biased or reverse biased ?
उत्तर
(a) Reverse Biased
APPEARS IN
संबंधित प्रश्न
What is the use of Zener diode?
Show on a graph, the variation of resistivity with temperature for a typical semiconductor.
With reference to semi-conductors answer the following :
(i) What is the change in the resistance of the semi-conductor with increase in temperature ?
(ii) Name the majority charge carriers in n-type semi-conductor.
(iii) What is meant by doping ?
Of the diodes shown in the following diagrams, which one is reverse biased?
The expected energy of the electron at absolute zero is called:-
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.
In the depletion region of a diode ______.
- there are no mobile charges.
- equal number of holes and electrons exist, making the region neutral.
- recombination of holes and electrons has taken place.
- immobile charged ions exist.
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’ |
![]() |
![]() |
![]() |
Answer the following giving reasons:
A p-n junction diode is damaged by a strong current.
Draw a labelled characteristic curve (l-V graph) for a semiconductor diode during forward bias.