Have an account?
Skip to Content
Build your own quiz
Professional Development
Professional Development
AC Theory - DC Review
15 questions
Show Answers
See Preview
- 1. Multiple Choice
An electric current is defined as the flow of ? through a conductor.
electrons
protons
nuclei
ohms
- 2. Multiple Choice
The unit of electric current is the ? , which is represented by the letter ?
ohm/R
ampere/I
voltage/E
watt/W
- 3. Multiple Choice
In Ohm's law, the letter "I" represents the _________ of current flow.
Inefficiency
Intensity
Opposition
Power
- 4. Multiple Choice
The unit of electrical potential is the ? , which is represented by the letter ? .
ampere/A
resistance/R
volt/V
watt/W
- 5. Multiple Choice
Power in a circuit is the amount of work being done per unit of time
True
False
- 6. Multiple Choice
In Figure PP1–1, if another resistor were added to the two 30 V resistors in parallel, the total resistance of the circuit would go ? .
Up
Down
Stay the same
Alternate
- 7. Multiple Choice
Calculate total circuit current.
1 A
2 A
3 A
4 A
- 8. Multiple Choice
Calculate total circuit power.
120 W
240 W
480 W
960 W
- 9. Multiple Choice
Calculate current flow at each of the 30 resistors.
1 A
2 A
4 A
6 A
- 10. Multiple Choice
Use the reciprocal formula to find the resistance of three resistors 10 ohm, 20 ohm, 30 ohms connected in parallel.
4.5 ohms
5.46 ohms
6 ohms
10 ohms
- 11. Multiple Choice
Write the formula to find the resistance of 1,000 feet of 3,000 cmil copper wire, that has a K factor of 10.5.
- 12. Multiple Choice
Using the information in Figure PP1–3, calculate the voltage drop between the source and the load.
10 V
14.7 V
18 V
22 V
- 13. Multiple Choice
Find the actual operating resistance of a 100 W, 120 V lamp.
100
144 ohms
150
4160 V
- 14. Multiple Choice
Calculate voltage drop at the 25 resistor.
12 V
50 V
120 V
240 V
- 15. Multiple Choice
In an AC circuit that contains only resistance, find the total current if the total voltage is 120 V and three 20 V resistors are in series.
1 A
2 A
3 A
4 A
- Answer choicesTagsAnswer choicesTags