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Ohm's Law Quiz

Total questions: 101

Worksheet time: 2hrs 20mins

Name
Class
Date
1.

Which of the following represents the rate of the flow of electricity, expressed in unit of amps?

a)

current

b)

circuit

c)

voltage

d)

resistance

2.

Which of the following represents the opposition presented to the current by a material or device, measured in ohms?

a)

current

b)

resistance

c)

voltage

d)

electricity

3.

Which of the following represents the potential difference between two points, measured in volts?

a)

voltage

b)

current

c)

electricity

d)

resistance

4.

In the model, what do the arrows represent?

a)

The flow of current

b)

The flow of resistance

c)

The flow of voltage

d)

The flow of positrons

5.

In the model, what does the lightbulb represent?

a)

electricity

b)

current

c)

voltage

d)

resistance

6.

In the model, what does the battery represent?

a)

voltage

b)

current

c)

circuit

d)

resistance

7.

Based on this model, what change should be made in order to increase the current?

a)

Close the switch

b)

Add another battery

c)

Add another lamp

d)

Remove a wire

8.

What is the formula for voltage?

a)

V = (I x R) / 2

b)

V = I / R

c)

V = R / I

d)

V = I x R

9.

What is the formula for current?

a)

I = V / R

b)

I = R / V

c)

I = V x R

d)

I = (V x R) / 2

10.

What is the formula for resistance?

a)

R = I / V

b)

R = V / I

c)

R = V x I

d)

R = (V x I) / 2

11.

If a charger for a tablet offers a voltage of 120V and has 240Ω of resistance, what is the amperage?

a)

0.5A

b)

2A

c)

14,400A

d)

28,800A

12.

If an electric ceramic brush has a current of 0.3 amps and a voltage of 120 volts, what is the resistance?

a)

18Ω

b)

36Ω

c)

200Ω

d)

400Ω

13.

If a computer has 10.0A of current and 11Ω of resistance, what is its voltage?

a)

0.9V

b)

1.1V

c)

55V

d)

110V

14.

Without considering the LED light, what would the current be in this schematic?

a)

0.01A

b)

73.3A

c)

220A

d)

660A

15.

Without considering the LED light, how many more volts will you need to increase the current to 0.05A?

a)

11V

b)

8V

c)

24V

d)

18V

16.

Based on the model, which of the following would be true regarding the relationship between voltage, current, and resistance?

a)

Current will reduce voltage.

b)

Current will not pass through resistance.

c)

Resistance will reduce current.

d)

Voltage will reduce resistance.

17.

Based on the graph, which of the following would be true regarding the relationship of voltage and current?

a)

As voltage increases, current decreases.

b)

Voltage will not affect current.

c)

As voltage decreases, current increases.

d)

As voltage increases, current also increases.

18.

Based on the table, which of the following is true regarding the relationship of voltage, resistance and current?

a)

If resistance remains constant while voltage increases, current will decrease.

b)

If current remains constant while resistance increases, voltage will increase.

c)

If voltage remains constant while resistance increases, current will decrease.

d)

If resistance remains constant while current is increasing, voltage will decrease.

19.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
20.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
21.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
22.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
23.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
24.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
25.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
26.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
27.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

28.

Voltage divided by Current

(V / I)

a)

Current

b)

Power

c)

Resistance

d)

Watts

29.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
30.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
31.

The current supplied by the battery for the circuit is 0.17 amps. Based on the circuit shown above, what is the potential difference across the 20.0 ohm resistor?

32.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
33.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
34.

If the battery produced 12.6 Volts what would be the current flow for a 6 Ohm resistor?

a)

2.1 Amps

b)

2.4 Amps

c)

1.71 Amps

d)

15 Amps

35.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
36.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
37.

Calculate the VOLTAGE through a load, if a resistance of 500 Ω that has a current of 1.4 A flowing through it.

a)

70 V

b)

357 V

c)

.0028 V

d)

700 V

38.

A 3-V battery sends a current of 0.10 A through a light bulb. What is the resistance of the filament of the bulb?

a)

.033 Ω

b)

30 Ω

c)

.3 Ω

d)

300 Ω

39.

A 10-V battery generates a current through a 5 Ω resistor. How much current does the battery generate?

a)

2 A

b)

50 A

c)

2.5A

d)

0.5

40.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
41.
What resistance is needed to cause a 50A current flow because of a 500V battery?
a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
42.

Which of the following represents the rate of the flow of electricity, expressed in unit of amps?

a)

current

b)

circuit

c)

voltage

d)

resistance

43.

Which of the following represents the opposition presented to the current by a material or device, measured in ohms?

a)

current

b)

resistance

c)

voltage

d)

electricity

44.

Which of the following represents the potential difference between two points, measured in volts?

a)

voltage

b)

current

c)

electricity

d)

resistance

45.

If a charger for a tablet offers a voltage of 120V and has 240Ω of resistance, what is the amperage?

a)

0.5A

b)

2A

c)

14,400A

d)

28,800A

46.

If an electric ceramic brush has a current of 0.3 amps and a voltage of 120 volts, what is the resistance?

a)

18Ω

b)

36Ω

c)

200Ω

d)

400Ω

47.

What is the formula for voltage?

a)

V = (I x R) / 2

b)

V = I / R

c)

V = R / I

d)

V = I x R

48.

What is the formula for current?

a)

I = V / R

b)

I = R / V

c)

I = V x R

d)

I = (V x R) / 2

49.

What is the formula for resistance?

a)

R = I / V

b)

R = V / I

c)

R = V x I

d)

R = (V x I) / 2

50.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
51.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
52.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
53.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
54.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
55.
What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?
a)
25 V
b)
10 V
c)
2.5 V
d)
0.4 V
56.

If the battery produced 12.6 Volts what would be the current flow for a 6 Ohm resistor?

a)

2.1 Amps

b)

2.4 Amps

c)

1.71 Amps

d)

15 Amps

57.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
58.
This circuit has a 24 volt battery and the resistor is 8 ohms. How many amps are running through the circuit?
a)
3 Amps
b)
192 Amps
c)
2 Amps
d)
4 Amps
59.
What word means how hard it is for electrons to flow through.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
60.
The flow of electricity requires a
a)
complete path
b)
incomplete path
c)
insulated current
d)
complex circuit
61.

Which best describes a parallel circuit?

a)

Electricity flows along one pathway.

b)

The flow of electricity comes from one source.

c)

Electricity flows along more than one pathway.

d)

The flow of electricity comes from more than one source.

62.

What is the formula for current?

a)

I = V / R

b)

I = R / V

c)

I = V x R

d)

I = (V x R) / 2

63.

What is the formula for voltage?

a)

V = (I x R) / 2

b)

V = I / R

c)

V = R / I

d)

V = I x R

64.

What is the formula for resistance?

a)

R = I / V

b)

R = V / I

c)

R = V x I

d)

R = (V x I) / 2

65.

If an electric ceramic brush has a current of 0.3 amps and a voltage of 120 volts, what is the resistance?

a)

18Ω

b)

36Ω

c)

200Ω

d)

400Ω

66.

If a computer has 10.0A of current and 11Ω of resistance, what is its voltage?

a)

0.9V

b)

1.1V

c)

55V

d)

110V

67.

When the voltage in a circuit increases, what happens to the current?

a)

Current Increases

b)

Current Decreases

c)

Current Remains the same

68.

Which of the following is the correct formula for Calculating Current?

a)

I = VRI\ =\ \frac{V}{R}  

b)

R = V x IR\ =\ V\ x\ I  

c)

I=RVI=\frac{R}{V}  

d)

V= I x RV=\ I\ x\ R  

69.

Which of the following is Ohm's Law?

a)

Current is proportional to Voltage and inversely proportional to resistance.

b)

Current is proportional to Resistance and inversely proportional to Voltage

c)

Resistance, Current and Voltage are proportional to each other.

70.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
71.

What is the current in a circuit with 6 ohms of resistance and a battery containing 24 Volts?

a)

1/4 A

b)

144 A

c)

4 A

d)

0.4 A

72.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
73.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
74.

Which of the following would be a measurement of Current?

a)

27 V

b)

32 Ω

c)

7 A

d)

1.5 W

75.

Which of the following would be a measurement of Resistance?

a)

3 Ω

b)

1.7 V

c)

23 A

d)

67 W

76.

What is the relationship between voltage and current in Ohm's law?

a)

The relationship between voltage and current in Ohm's law is that they are inversely proportional to each other.

b)

The relationship between voltage and current in Ohm's law is that they are directly proportional to each other.

c)

The relationship between voltage and current in Ohm's law is that they are only related in alternating current circuits.

d)

The relationship between voltage and current in Ohm's law is that they are not related to each other.

77.

If the resistance in a circuit is 5 ohms and the current is 2 amps, what is the voltage?

a)

7 volts

b)

3 volts

c)

15 volts

d)

10 volts

78.

If the voltage in a circuit is doubled, what happens to the current if the resistance remains the same?

a)

The current will double

b)

The current will be halved

c)

The current will remain the same

d)

The current will decrease by 25%

79.

What happens to the current in a circuit if the resistance is increased?

a)

Fluctuates

b)

Decreases

c)

Increases

d)

Remains the same

80.

How does Ohm's law apply to the use of resistors in electronic devices?

a)

Ohm's law cannot be used to calculate the current flowing through the resistor

b)

Ohm's law can be used to calculate the resistance of the resistor when the voltage across it is unknown

c)

Ohm's law only applies to capacitors in electronic devices

d)

Ohm's law can be used to calculate the current flowing through the resistor when the voltage across it is known, or to calculate the resistance of the resistor when the current flowing through it and the voltage across it are known.

81.

What is the unit of measurement for electrical resistance?

a)

Ohm

b)

Ampere

c)

Volt

d)

Watt

82.

What happens to the voltage in a circuit if the current is increased and the resistance remains the same?

a)

The voltage will increase

b)

The voltage will decrease

c)

The voltage will remain the same

d)

The voltage will fluctuate

83.

What is the formula to calculate voltage if the current (I) and resistance (R) are known?

(a)  

84.

How can you calculate resistance using Ohm's Law?

(a)  

85.

What does the symbol 'Ω' stand for in electrical terms?

a)

Voltage

b)

Current

c)

Power

d)

Resistance

86.

If a circuit with one bulb has full current, what is the current when two bulbs are added to the circuit?

a)

Full current

b)

Half the current

c)

Double the current

d)

One-third the current

87.

How does the current change when three bulbs are connected in a circuit compared to a single bulb?

a)

It remains the same.

b)

It is halved.

c)

It is doubled.

d)

It is one-third.

88.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
89.

If the battery produced 12.6 Volts, what would be the current flow be for a 6 Ohm resistor?

a)

2.1 Amps

b)

2.4 Amps

c)

1.71 Amps

d)

15 Amps

90.

A hair dryer draws 14.0 amps from a 120 volt circuit. How much power did the hair dryer use?

a)

.1167 Watt

b)

8.57 Watt

c)

1,680 Watt

d)

840 Watt

91.

12. An overhead wire has a potential difference of 30,000 volts. If the current flowing through the wire is 1,000 amperes, what is the resistance of the wire?

a)

0.033 ohms

b)

30 ohms

c)

3.0 x 10^7 ohms

d)

3.0 x 10^8 ohms

92.

What is the unit for energy?

a)

Watt

b)

Joule

c)

Volt

d)

Ohm

93.

"Voltage" is a common term for ---.

a)

potential difference

b)

current

c)

charge

d)

electric potential energy

94.

Voltage is measured with a _____.

a)

ammeter

b)

voltmeter

c)

ohmmeter

95.

What is the job of a battery? (BEST answer)

a)

provide power

b)

provide energy

c)

turns the circuit on

d)

provide energy for the electrons to flow

96.
How many Volts would we need to produce a current flow of 8 Amps through a 6 Ohm resistor
a)
12 volts
b)
24 volts
c)
1.3333
d)
48 volts
97.

Current is like ______________________.

a)

the water flowing from the spigot

b)

the hose being squeezed

c)

the water flowing from the hose

d)

the dog running through the yard

98.

Based on the graph, which of the following would be true regarding the relationship of voltage and current?

a)

As voltage increases, current decreases.

b)

Voltage will not affect current.

c)

As voltage decreases, current increases.

d)

As voltage increases, current also increases.

99.
What 'flows' in a wire?
a)
Protons
b)
Neutrons
c)
Atoms
d)
Electrons
100.

How many Volts would it take to push 1 Amp through a resistance of 1 Ohm

(a)  

101.

A Charging system producing 14.5 Volts with a current flow of 43.5 Amps, what is the circuit's resistance? (include the unit).

(a)  

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