12. What is the difference between intrinsic and extrinsic semiconductor?
A. Intrinsic semiconductors are pure in form while extrinsic
semiconductors have impurities.
B. Intrinsic semiconductors are more conductive than extrinsic
semiconductors
C. Intrinsic semiconductors' conductivity is dependent
temperature while extrinsic semiconductors are not
D. None of the choices
13. What two semiconducting elements are widely used in modern technology
nowadays?
A. Ge and Si
B. As and P
C. B and Si D. Ge and Al
14. What property clearly distinguish the difference between conductors,
insulators, and semiconductors?
A. Ductility B. Electrical conductivity C. energy band D. luster
15. What makes semiconductors significant in modern electronics?
A. Semiconductors possess flexibility in conduction depending on
temperature and added impurities
B. Semiconductors are more abundant than metals and non-metals
C. It is much safer and more reliable
D. All of the choices
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Answer:
12.a
13.c
14.a
15.d
Explanation:
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