The impurity level in an extrinsic semiconductor is about_______________of pure semiconductor ?
Correct answer: B. 1 atom for 108 atoms
- A. 10 atoms for 108 atoms
- B. 1 atom for 108 atoms
- C. 1 atom for 104 atoms
- D. 1 atom for 100 atoms
Explanation
Only a very small fraction of atoms is replaced by impurity atoms in an extrinsic semiconductor, commonly about one impurity atom per 10^8 semiconductor atoms. This tiny addition can greatly increase carrier concentration.
Last updated
Practise Electronics and Devices
758 free Electronics and Devices MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1 db corresponds to_____________change in power level?
A 1,000 V power supply would use_____________ as a filter capacitor?
A 10 V power supply would use ____________ as filter capacitor?
A 2-transistor class B power amplifier is commonly called ______________ amplifier?
A 25eV electron has a speed of______________?