Electronics - Semiconductor Principles

Exercise :: Semiconductor Principles - General Questions

21. 

How many valence electrons are in every semiconductor material?

A. 1
B. 2
C. 3
D. 4

Answer: Option D

Explanation:

No answer description available for this question. Let us discuss.

22. 

What is a type of doping material?

A. extrinsic semiconductor material
B. pentavalent material
C. n-type semiconductor
D. majority carriers

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

23. 

Minority carriers are many times activated by:

A. heat
B. pressure
C. dopants
D. forward bias

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

24. 

What is the voltage across R1 if the P-N junction is made of silicon?

A. 12 V
B. 11.7 V
C. 11.3 V
D. 0 V

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

25. 

If conductance increases as temperature increases, this is known as a:

A. positive coefficient
B. negative current flow
C. negative coefficient
D. positive resistance

Answer: Option C

Explanation:

A negative temperature coefficient (NTC) occurs when the thermal conductivity of a material rises with increasing temperature, typically in a defined temperature range.

Note: The reciprocal of electrical Resistance is called Conductance.