a b.) с The conductivity of a pure semiconductor is due to: al 02 @ 3 4 a 5 A pure semiconductor is a good conductor when the temperature is: a a 2 a 3 4 a 5 electrons holes positive ions of the N regions and electrons electrons and holes positive ions of the P regions and holes 2 a 3 4 5 very high very low absolute zero when ranging between 0 and 25 °K it is not affected by temperature AP type semiconductor is obtained by adding impurities such as: al those belonging to group V of the periodic table of the elements those belonging to the group III of the periodic table of the elements antimony only gallium only boron in the proportion of 25 %, and arsenic as 75 %

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B01.2 QUESTIONS ON THIS CHAPTER
C
a
رها
The conductivity of a pure semiconductor is due to:
al electrons.
2
□ 3
04
□5
al
02
3
04
5
A pure semiconductor is a good conductor when the temperature
is:
□ 2
□3
4
5
AP type semiconductor is obtained by adding impurities such as:
al
LESSON BOI: INTRODUCTION TO SEMICONDUCTORS
2
holes
positive ions of the N regions and electrons
electrons and holes
positive ions of the P regions and holes
□ 3
04
5
very high
very low
ol
□ 2
□ 3
4
□5
absolute zero
when ranging between 0 and 25 °K
it is not affected by temperature
An N type semiconductor is obtained by adding impurities such as:
those belonging to group III of the periodic table of the
elements
al
phosphorus only
those belonging to group V of the periodic table of the
elements
those belonging to the group III of the periodic table of the
elements
antimony only
gallium only
boron in the proportion of 25 %, and arsenic as 75 %
boron only
aluminum and antimony together at 50%
those belonging to group V of the periodic table of the
elements
Does a doped semiconductor have a higher conductivity than a pure
semiconductor?
no
yes, but only at a temperature of 0 °K
yes, but only if it is doped with N type impurities
yes
none of the above is correct
5
Transcribed Image Text:B01.2 QUESTIONS ON THIS CHAPTER C a رها The conductivity of a pure semiconductor is due to: al electrons. 2 □ 3 04 □5 al 02 3 04 5 A pure semiconductor is a good conductor when the temperature is: □ 2 □3 4 5 AP type semiconductor is obtained by adding impurities such as: al LESSON BOI: INTRODUCTION TO SEMICONDUCTORS 2 holes positive ions of the N regions and electrons electrons and holes positive ions of the P regions and holes □ 3 04 5 very high very low ol □ 2 □ 3 4 □5 absolute zero when ranging between 0 and 25 °K it is not affected by temperature An N type semiconductor is obtained by adding impurities such as: those belonging to group III of the periodic table of the elements al phosphorus only those belonging to group V of the periodic table of the elements those belonging to the group III of the periodic table of the elements antimony only gallium only boron in the proportion of 25 %, and arsenic as 75 % boron only aluminum and antimony together at 50% those belonging to group V of the periodic table of the elements Does a doped semiconductor have a higher conductivity than a pure semiconductor? no yes, but only at a temperature of 0 °K yes, but only if it is doped with N type impurities yes none of the above is correct 5
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