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Unit 3: Electricity Quiz

Total questions: 40

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

The flow of electric charge in a circuit is called _______.

a)

Heat

b)

Sound

c)

Electric Current

d)

Magnetic

2.

The word current means:

a)

the difference in electrical potential between two places along an electrical circuit

b)

the flow of electric charge

c)

a flow of electrons that is always changing directions

d)

a flow of electrons along a circuit in one direction

3.

What is voltage?

a)

the difference in electrical potential between two places along an electrical circuit

b)

the flow of electric charge

c)

a flow of electrons that is always changing directions

d)

a flow of electrons along a circuit in one direction

4.

What is Direct Current (DC)?

a)

the difference in electrical potential between two places along an electrical circuit

b)

the flow of electric charge

c)

a flow of electrons that is always changing directions

d)

a flow of electrons along a circuit in one direction

5.

What is Alternating Current (AC)?

a)

the technology that powers motors in electric cars

b)

the flow of electric charge

c)

a flow of electrons that is always changing directions

d)

a flow of electrons along a circuit in one direction

6.

We measure current in a standard unit called:

a)

amperes

b)

coulombs

c)

voltage

d)

Ohms

7.

An electric circuit is a configuration of:

a)

components, schematics, and electricity

b)

components, wires, and electricity

c)

printed circuit boards, schematics, and electricity

d)

wires, capacitors, and electricity

8.

The different electronic components in a circuit are connected using:

a)

wires

b)

schematics

c)

a printed circuit board

d)

a ground

9.

A certain point in a circuit where the voltage is zero is called a:

a)

printed circuit board

b)

component

c)

schematic

d)

ground

10.

A ground is usually the:

a)

most positive terminal of the power supply

b)

most negative terminal of the power supply

c)

the point at which the circuit meets the actual ground

d)

printed circuit board

11.

Which of the following is NOT a passive component of a circuit board?

a)

capacitor

b)

resistor

c)

connector

d)

transistor

12.
What is a switch's function in a circuit?
a)
to make the current hotter or colder
b)
turn on and off the flow of current
c)
the pathway that current flows
d)
to add more power to the circuit
13.
Resistance is
a)
an objects ability to resist Voltage
b)
an objects ability to resist resistance
c)
An objects ability to resist current
d)
An objects resistance to temptation
14.
What is the current if the resistance is 20 ohms, and the voltage 100 V?
a)
20 Amps
b)
5 Amps
c)
.2 Amps
d)
2000 Amps
15.
What is the resistance, if the voltage is 9 V and the Current is 3 Amps?
a)
.33
b)
27
c)

6

d)
3
16.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
17.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
18.
How do you calculate voltage?
a)
Current X Resistance
b)
Resistance ÷ Current
c)
Current ÷ Resistance
d)
Measure it with a ruler
19.
How do you calculate current
a)
Resistance X Voltage
b)
Voltage X Resistance
c)
Resistance ÷ Voltage
d)
Voltage ÷ Resistance
20.
With the engine running the charging system produces 14.5 Volts what would the current flow be if a resistance of 6 Ohms was present
a)
2.41 Ohms
b)
2.52 Ohms
c)
2.1 Ohms
d)
0.3333 Ohms
21.
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
22.
An example of a conductor is :
a)
a glass paperweight
b)
a plastic cap
c)
a metal screw
d)
a wooden handle
23.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
24.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
25.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
26.

Voltage divided by Current

(V / I)

a)

Current

b)

Power

c)

Resistance

d)

Watts

27.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

28.
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
29.
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
30.
DC stands for ____ and is used in batteries.
a)
Distant Current
b)
Don't Current
c)
Direct Current
d)
Distributed current
31.

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.

32.

What is the voltage of a circuit with 4 ohms of resistance and 3 amps of current?

a)

12 V

b)

21 V

c)

4/3 V

d)

3/4 V

33.

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

34.

What is the resistance of a lightbulb that experiences 9 Volts and 3 amps of current?

a)

1/3 ohms

b)

3 ohms

c)

27 ohms

d)

9 ohms

35.

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

36.

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

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.

What voltage is needed to cause a 2A current flow through a 10Ω resistor?

a)
5V
b)
0.2V
c)
20V
d)
200V
39.

What resistance is needed to cause a 50A current flow because of a 500V battery?

a)
10Ώ
b)
5Ώ
c)
2500Ώ
d)
550Ώ
40.

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

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