HVAC Textbook
Review Questions (25 Questions) & Critical Thinking (10 Questions with Work Shown)
(35 Questions Total)
Review Questions
1. Which of the following is not a part of an atom?
B. Coulomb
2. The potential difference of atomic charges that forces electron flow is called:
B. voltage
3. Current is measured in
B. amperes
4. The electrical property that resists the flow of electrons is called
C. resistance
5. Resistance is measured in
C) ohms
6. According to Ohm's law, if a circuit's resistance is 5 (ohms) and the voltage
applied is 100V, what is the current?
D. 20 A
, 7. According to Ohm's law, if a circuit's resistance is 40 (ohms) and the current is
measured at 4 A, what is the voltage:
A. 160V
8. The ability of a material to store a charge of free electrons or electrical energy
is called:
D. capacitance
9. Capacitors are used in HVACR systems to do all of the following except:
B. induce an alternating current from a magnetic field
10. Electron flow along a conductor in one direction describes:
C. direct current
11. Electricity that flows in one direction and then in the other describes:
D. alternating current
12. Which type of material resists electron flow?
B. Insulators
13. Which type of material allows electrons to flow easily?
A. Conductors
14. Which type of material can be designed to manipulate by light, pressure, heat,
or electricity to either conduct or resist electron flow?
C. Semiconductors
Review Questions (25 Questions) & Critical Thinking (10 Questions with Work Shown)
(35 Questions Total)
Review Questions
1. Which of the following is not a part of an atom?
B. Coulomb
2. The potential difference of atomic charges that forces electron flow is called:
B. voltage
3. Current is measured in
B. amperes
4. The electrical property that resists the flow of electrons is called
C. resistance
5. Resistance is measured in
C) ohms
6. According to Ohm's law, if a circuit's resistance is 5 (ohms) and the voltage
applied is 100V, what is the current?
D. 20 A
, 7. According to Ohm's law, if a circuit's resistance is 40 (ohms) and the current is
measured at 4 A, what is the voltage:
A. 160V
8. The ability of a material to store a charge of free electrons or electrical energy
is called:
D. capacitance
9. Capacitors are used in HVACR systems to do all of the following except:
B. induce an alternating current from a magnetic field
10. Electron flow along a conductor in one direction describes:
C. direct current
11. Electricity that flows in one direction and then in the other describes:
D. alternating current
12. Which type of material resists electron flow?
B. Insulators
13. Which type of material allows electrons to flow easily?
A. Conductors
14. Which type of material can be designed to manipulate by light, pressure, heat,
or electricity to either conduct or resist electron flow?
C. Semiconductors
