Semiconductor Electronics Quiz 2

Question 1

The number of bonds formed in p-type and n-type semiconductors are respectively

Accepted Answer

3,4

Answer

4,5

Answer

4,3

Answer

5,4

Question 2

The drift current in a p-n junction is

Accepted Answer

from the n region to p region

Answer

from the p region to n region

Answer

from n to p region if the junction is forward biased and from p to n region if the junction is reverse biased

Answer

from p to n region if the junction is forward biased and from n to p region if the junction is reverse biased

Question 3

If a p-n junction diode is not connected to any circuit, then

Accepted Answer

there is an electric field at the junction directed from n-type side to p-type side.

Answer

the potential is same everywhere

Answer

potential is not same and n-type side has lower potential than p-type side.

Answer

there is an electric field at junction direction from p-type side to n-type side.

Question 4

The movement of a hole is brought about by the valency being filled by a &hellip;&hellip;&hellip;&hellip;

Accepted Answer

valence electrons

Answer

free electrons

Answer

positive ions

Answer

negative ions

Question 5

In an unbiased p-n junction, holes diffuse from the p-region to n-region because

Accepted Answer

hole concentration in p-region is more as compared to n-region.

Answer

free electrons in the n-region attract them.

Answer

they move across the junction by the potential difference.

Answer

all of these.

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