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- 1. Multiple Choice
Which of the following represents the rate of the flow of electricity, expressed in unit of amps?
current
circuit
voltage
resistance
- 2. Multiple Choice
Which of the following represents the opposition presented to the current by a material or device, measured in ohms?
current
resistance
voltage
electricity
- 3. Multiple Choice
Which of the following represents the potential difference between two points, measured in volts?
voltage
current
electricity
resistance
- 4. Multiple Choice
In the model, what do the arrows represent?
The flow of current
The flow of resistance
The flow of voltage
The flow of positrons
- 5. Multiple Choice
In the model, what does the lightbulb represent?
electricity
current
voltage
resistance
- 6. Multiple Choice
In the model, what does the battery represent?
voltage
current
circuit
resistance
- 7. Multiple Choice
Based on this model, what change should be made in order to increase the current?
Close the switch
Add another battery
Add another lamp
Remove a wire
- 8. Multiple Choice
What is the formula for voltage?
V = (I x R) / 2
V = I / R
V = R / I
V = I x R
- 9. Multiple Choice
What is the formula for current?
I = V / R
I = R / V
I = V x R
I = (V x R) / 2
- 10. Multiple Choice
What is the formula for resistance?
R = I / V
R = V / I
R = V x I
R = (V x I) / 2
- 11. Multiple Choice
If a charger for a tablet offers a voltage of 120V and has 240Ω of resistance, what is the amperage?
0.5A
2A
14,400A
28,800A
- 12. Multiple Choice
If an electric ceramic brush has a current of 0.3 amps and a voltage of 120 volts, what is the resistance?
18Ω
36Ω
200Ω
400Ω
- 13. Multiple Choice
If a computer has 10.0A of current and 11Ω of resistance, what is its voltage?
0.9V
1.1V
55V
110V
- 14. Multiple Choice
Without considering the LED light, what would the current be in this schematic?
0.01A
73.3A
220A
660A
- 15. Multiple Choice
Without considering the LED light, how many more volts will you need to increase the current to 0.05A?
11V
8V
24V
18V
- 16. Multiple Choice
Based on the model, which of the following would be true regarding the relationship between voltage, current, and resistance?
Current will reduce voltage.
Current will not pass through resistance.
Resistance will reduce current.
Voltage will reduce resistance.
- 17. Multiple Choice
Based on the graph, which of the following would be true regarding the relationship of voltage and current?
As voltage increases, current decreases.
Voltage will not affect current.
As voltage decreases, current increases.
As voltage increases, current also increases.
- 18. Multiple Choice
Based on the table, which of the following is true regarding the relationship of voltage, resistance and current?
If resistance remains constant while voltage increases, current will decrease.
If current remains constant while resistance increases, voltage will increase.
If voltage remains constant while resistance increases, current will decrease.
If resistance remains constant while current is increasing, voltage will decrease.
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