UNIT 1 137 CA

The atoms of a material used as a conductor generally contain ( . ) valence electrons. a. one or two b. two or three c. three or four d. seven or eight

a. one or two

Why are solid-state electronic devices so named? a. Because they are in perpetual so named b. Because they are made only of heavy material c. Because they have no moving parts d. For all of the above reasons

c. Because they have no moving parts

Solid-state electronic devices are constructed from pieces of material called ( . ) a. p-type material b. lattice structures c. semiconductors d. n-type material

c. semiconductors

The two most common materials used to produce semiconductor devices are ( . ) and ( . ) a. aluminum, lead b. copper, zinc c. silicon, germanium d. silver, gold

c. silicon, germanium

what is the process use to add impurities, or elements with different number of valence electrons, to an intrinsic semiconductor material called? a. joining b. charging c. rating d. doping

d. doping

Semiconductors are materials that contain ( . ) valence electrons. a. one b. two c. three d. four

d. four

The atoms of a material used as an insulator generally contain ( . ) valence electrons. a. one or two b. two or three c. three or four d. seven or eight

d. seven or eight

Which of the following materials is the best conductor of electricity? a. gold b. aluminum c. copper d. silver

d. silver