Test 3: Complete Chapter 19 Review

Question 1

Electronics gives rise to advancements in areas such as:

• Aartificial intelligence, renewable energy and space exploration
• Bonly farming
• Conly mining
• Donly printing

Question 2

In an N-type semiconductor, how many of the five valence electrons of the impurity form covalent bonds with silicon?

• Aone
• Btwo
• Cthree
• Dfour

Question 3

A trivalent impurity atom has how many valence electrons?

• A3
• B4
• C5
• D6

Question 4

At a PN junction, the depletion region is formed when:

• Aelectrons from the N-side and holes from the P-side recombine
• Bprotons cross the junction
• Cthe battery is reversed
• Dthe diode is heated

Question 5

A diode is like a one-way road for current, allowing it to flow in:

• Aonly one direction and blocking it in the opposite direction
• Bboth directions
• Cno direction
• Drandom directions