Below are the answers for the Floyd Self-test in Chapter 1: Introduction to Semiconductors from the book Electronic Devices Conventional Current Version, 9th edition by Thomas L. Floyd.
1. a unique type of atom
2. answers (b) and (c)
3. protons and neutrons
4. in the most distant orbit from the nucleus
5. a valence electron breaks away from the atom
6. silicon
7. answers(a), (b), and (c)
8. conduction band
9. answers (a), (b), and (c)
10. 14
11. 32
12. 3
13. eight valence electrons, four of its own and four shared
14. thermal energy
15. an electron falls into a hole
16. both electrons and holes
17. answers (b) and (d)
18. doping
19. a p-type semiconductor
20. increase the number of free electrons
21. conduction electrons
22. minority carriers that are thermally produced
23. the boundary of a p-type and an n-type material
24. answers (a), (b), and (c)
25. answers(b) and (c)
26. a dc voltage is applied to control the operation of a device
27. answers (a) and (c)
28. the current is produced both holes and electro
29. there is a very small current due to minority carriers
30. must be greater than 0.7 V
31. conducts current
32. either (b) or (c)
33. forward-biased
34. the voltage across the diode for a given current
35. switch
36. the barrier potential is taken into account
37. all of these
38. approximately 0.7 V
39. OL
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