How many free electrons does a p type semiconductor has?
A. Only those produced by thermal energy
B. Only those produced by doping
C. Those produced by doping as well as thermal energy
D. Any of the above
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Electronic Devices And Circuits
Join The Discussion
Comments (2)
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
Y
This is because they are doped with tetra valent element causes creation of extra holes not eletrons