In the depletion region of a diode :
(A) There are no mobile charges
(B) Equal number of holes and electrons exist, making the region neutral
(C) recombination of holes and electrons has taken place
(D) Immobile charged ions exist
(E) There are mobile charges
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (C), (D) only
- The depletion region is formed at the junction between the p-type and n-type materials.
- Immobile charged ions are left behind when the mobile charge carriers diffuse across the junction to recombine.
- These immobile ions create an electric field that prevents further movement of charge carriers, and this region is called depletion region because it is depleted of charge carriers.