At room temperature the current in an intrinsic semiconductor is due to
A. Holes
B. Electrons
C. Ions
D. Holes and electrons
Answer: Option D
Solution (By Examveda Team)
The correct answer is D: Holes and electrons.Here's why:
Intrinsic semiconductors are pure semiconductors, meaning they haven't been doped with any impurities.
At room temperature, some of the electrons in the semiconductor gain enough energy to break free from their bonds.
When an electron breaks free, it leaves behind a hole in the crystal structure.
Both the free electrons and the holes can move through the material under the influence of an electric field.
Therefore, the current in an intrinsic semiconductor at room temperature is due to the movement of both holes and electrons.
Ions are not the primary charge carriers in intrinsic semiconductors.
This Question Belongs to Electronics And Communications Engineering >> Electronic Devices And Circuits
Join The Discussion
Comments (1)
The forbidden energy gap between the valence band and conduction band will be least in case of
A. Metals
B. Semiconductors
C. Insulators
D. All of the above
For a NPN bipolar transistor, what is the main stream of current in the base region?
A. Drift of holes
B. Diffusion of holes
C. Drift of electrons
D. Diffusion of electrons
A. Both A and R are true and R is correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true
For a P-N diode, the number of minority carriers crossing the junction depends on
A. Forward bias voltage
B. Potential barrier
C. Rate of thermal generation of electron hole pairs
D. None of the above
Because an intrinsic semiconductor has hole concentration and electron concentration both.