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WorksheetsElectricity review
Total questions: 44
Worksheet time: 2hrs 36mins
Name
Class
Date
1.
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
2.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
3.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
4.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
5.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
6.
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
7.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
8.
Current times Resistance equals
(I X R)
(I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
9.
Voltage divided by Resistance
(V / R)
a)
Current
b)
Power
c)
Ohms
d)
Watts
10.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
11.
If the Voltage stays the same and Resistance is increased, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
12.
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
13.
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
14.
What word means how hard it is for electrons to flow through.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
15.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
It depends
16.
How many Volts would it take to push 1 Amp through a resistance of 1 Ohm
a)
10 volts
b)
1 volt
c)
48 volts
d)
5 volts
17.
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
18.
What would the circuit resistance be if a 7.5 Amp draw was present with the engine running and the charging system producing 15 Volts
a)
15 Ohms
b)
4 Ohms
c)
0.3333 Ohms
d)
2 Ohms
19.
What is the formula for ohms law?
a)
1+2=3
b)
R X E = I
c)
E =I x R
d)
E= MC squared
20.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
21.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
22.
The picture shows an electrical circuit. This circuit is a series circuit because:
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
23.
This circuit has more than one loop. When one light goes out, the others stay on.
a)
closed circuit
b)
series circuit
c)
parallel circuit
d)
open circuit
24.
Pick the correct sentence.
a)
This circuit will work because it is a closed circuit.
b)
Energy will freely flow in this circuit.
c)
This circuit will not work because there is no energy source.
d)
This circuit will not work because there is no switch.
25.
The picture shows an electrical circuit. This circuit is a series circuit because:
a)
It has 3 light bulbs.
b)
The same current flows through all three light bulbs.
c)
It uses a single battery.
d)
The electrical current is divided between the three light bulbs.
26.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will stay on
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
27.
The current has only has one loop to flow through in this circuit.
a)
Series Circuit
b)
Parallel Circuit
28.
Which of the two circuits would have the brightest bulbs?
a)
A
b)
B
29.
When you remove a bulb from a three bulb circuit, and the other two bulbs go off, then the bulbs must have been connected in __________.
a)
parallel
b)
series
c)
open
d)
closed
30.
Does this statement best describe a parallel or a series circuit.
When more light bulbs are added they all remain bright.
When more light bulbs are added they all remain bright.
a)
Parallel circuit
b)
Series circuit
31.
Does this diagram represent a series or parallel circuit?
a)
series circuit
b)
parallel circuit
32.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
33.
How are electromagnets different from magnets?
a)
magnets can be turned on/off
b)
you can turn an electromagnet on/off
c)
magnets are more powerful
d)
magnets have a North and South pole
34.
An electric motor changes electrical energy to _________ energy.
a)
mechanical
b)
chemical
c)
potential
d)
electrical
35.
What is the device seen here?
a)
generator
b)
electric motor
c)
electromagnet
d)
magnet
36.
Generators are devices that convert _____ energy into _____ energy.
a)
chemical; mechanical
b)
mechanical; electrical
c)
electrical; mechanical
d)
potential; kinetic
37.
What type of device is being shown?
a)
Electromagnet
b)
Electric motor
c)
Electric generator
d)
Electromagnetic Induction
38.
What type of current is used?
a)
Direct
b)
Alternating
39.
If you were to make a motor stronger, what should you do?
a)
Decrease the voltage
b)
Increase the voltage
c)
Disconnect the wires from the batteries
d)
Use a wooden rod instead of a wire
40.
What is a possible power source of a generator?
a)
Fan
b)
Plug
c)
Battery
41.
What type of device is shown?
a)
Electromagnet
b)
Electric motor
c)
Electric generator
d)
Electromagnetic induction
42.
Which electromagnet would be stronger?
a)
Left
b)
Right
43.
What type of current is being produced?
a)
Alternating
b)
Direct
44.
What is the starting energy for a motor?
a)
Electrical
b)
Mechanical
c)
Chemical
d)
Potential
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