Properties of semi intrinsic semi conductors

Question 1

1-

Answer 1

Some electrons are able to jump the forbidden gap to enter the conduction band

Question 2

2-

Answer 2

Electrons in the conduction band act as negative charge carriers

Question 3

3-

Answer 3

The vacancies left behind in the valence band by the electron entering the conduction are known as holes
Holes behave like positive charges in the valence band

Question 4

4-

Answer 4

Lattice vibrations increases as temperature increases

Question 5

5.

Answer 5

Any effect due to increase in the number of charge carriers outweighs any effect due to an increase in lattice vibrations

Question 6

6-

Answer 6

Overall resistance decreases as temperature rises