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Electricity Review

Total questions: 63

Worksheet time: 16hrs 45mins

Name
Class
Date
1.
This circuit is _________.
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
2.
This circuit is _________.
a)
open
b)
parallel
c)
closed
d)
The cutest little circuit evah!
3.
what is this symbol for?
a)
light bulb
b)
switch
c)
battery
d)
resistor
4.
this is the symbol for a _____?
a)
switch
b)
light 
c)
battery
d)
wires
5.
This is the symbol for a ...
a)
Wire
b)
Battery
c)
Buzzer
d)
Fuse
6.
This is the symbol for 
a)
An Ammeter
b)
A Voltmeter
c)
A Meter
d)
A Motor
7.
Which of the following answer choices correctly describes the image? 
a)
Series circuit - Bulbs are lit
b)
Series circuit - Bulbs are off
c)
Parallel circuit - Bulbs are lit
d)
Parallel circuit - Bulbs are off
8.
What is a current?
a)
A constant flow of electricity 
b)
A path that a current can flow along
9.
What is a circuit?
a)
A constant flow of electricity 
b)
A path that a current can flow along
10.

What is the power source in this circuit?

a)

Bulb

b)

Switch

c)

Wire

d)

Battery

11.
A material which electrons are able to move through easily:
a)
Circuit
b)
Insulator 
c)
Resistance 
d)
Conductor 
12.
What is a battery?
a)
switch
b)
power source
c)
insulator
13.
A complete circuit has .......
a)
a motor in it
b)
a switch in it
c)
two bulbs in it
d)
no breaks in it
14.
A student began building a circuit to light a bulb.  What else does the student need to produce light?
a)
a battery that has energy
b)
a wire that is insulated
c)
a switch that is open
d)
another bulb of the same size
15.
An incomplete circuit is shown.
To complete the circuit, a wire should be placed from —
a)
Point D to Point C
b)
Point B to Point C
c)
Point A to Point D
d)
Point B to Point D
16.
Lightbulbs use electricity to make light. What else do lightbulbs often give off?
a)
Food energy
b)
Heat Energy
c)
Solar Energy
d)
Wind Energy
17.
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.
18.
What type of circuit is show in the image?
a)
Series Circuit
b)
Parallel Circuit
19.
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. 
20.
In a Series circuit the more lightbulbs you add the brighter they get 
a)
False 
b)
True 
21.
Bits of paper are attracted to the surface of this balloon.  What attracts the paper pieces to the balloon?
a)
Friction
b)
Static Electricity
c)
Magnetism
d)
Potential Energy
22.
What will happen if one light bulb is removed from this circuit?
a)
the other bulbs will go out
b)
the other bulbs will get dimmer
c)
the other bulbs will get brighter
d)
the battery will become stronger
23.
Current is referred to as:
a)
flow of electricity
b)
circuits
c)
flow of electrons
d)
batteries
24.
Which light will be brighter and why?
a)
Bulb A because its circuit is closed
b)
Bulb B because its circuit is closed
c)
Bulb B because it has more volts
d)
Bulb A because it has less volts
25.
Which of the following can work as an energy source?
a)
Battery
b)
Light bulb
c)
Wire
d)
All of them
26.
During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...
a)
the plastic strip acquired extra protons from the cotton.
b)
the plastic strip acquired extra protons from the charging process 
c)
protons were created as the result of the charging process
d)
the plastic strip lost electrons to the cotton during the charging process 
27.
 A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to
a)
magnetic forces between the particles of the balloon and the particles of the wall
b)
electrostatic forces between the particles of the balloon and the particles of the wall
c)
magnetic forces between the particles of the wall
d)
electrostatic forces between the particles of the balloon
28.
A negatively charged plastic comb is brought close to, but does not touch, a small piece of paper. If the comb and the paper are attracted to each other, the charge on the paper
a)
must be positive
b)
must be negative
c)
may be neutral or negative
d)
may be neutral or positive 
29.
Two electrically neutral metal spheres, A and B, on insulating stands are placed in contact with each other. A negatively charged rod is brought near, but does not touch the spheres, as shown in the diagram below. How are the spheres now charged?
a)
A is positive and B is positive.
b)
A is negative and B is positive.
c)
A is positive and B is negative.
d)
A is negative and B is negative.
30.
Electrostatic force F exists between two point charges. If the both charges are doubled, the force between the charges will be
a)
F
b)
4F
c)
2F
d)
F/4
31.
Which of the following is a false statement about electrostatic force.
a)
Bringing charges closer together strengthen the force.
b)
The electrostatic constant remains the same.
c)
The values of the two charges is always the same.
d)
Electrostatic force can be attractive or repulsive
32.
An electrostatic force of magnitude F exists between two metal spheres having identical charge q. The distance between their centers is r. Which combination of changes would produce no change in the electrostatic force between the spheres?
a)
doubling q on both spheres while halving r
b)
doubling q on one sphere while halving r
c)
doubling q on one sphere while doubling r
d)
doubling q on both spheres while doubling r
33.
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
34.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
35.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
36.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
37.
What is Resistance?
a)
The flow of electrons
b)
Electric potential difference
c)
A battery
d)
The ability to reduce the flow of electrons
38.
Electricity that flows in a closed path is called a
a)
path
b)
current
c)
circuit
d)
light
39.
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
40.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
41.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
42.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

43.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
44.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
45.
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
46.
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
47.
What word means how hard it is for electrons to flow through.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
48.
To complete a circuit the switch must be
a)
unattached
b)
open
c)
closed
d)
It depends
49.
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
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 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
52.

What is the formula for ohms law?

a)

1+2=3

b)

R X V = I

c)

V=I x R

d)

R= I x V

53.

Four unequal resistors are connected in series with each other. Which one of the following statements is correct about this combination?

a)

The equivalent resistance is equal to that of any one of the resistors.

b)

The equivalent resistance is equal to average of the four resistances.

c)

The equivalent resistance is less than that of the smallest resistor.

d)

The equivalent resistance is less than that of the largest resistor.

e)

The equivalent resistance is more than the largest resistance.

54.

Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?

a)

The equivalent resistance is less than that of the smallest resistor.

b)

The equivalent resistance is equal to the average of the four resistances.

c)

The equivalent resistance is midway between the largest and smallest resistance.

d)

The equivalent resistance is more than the largest resistance.

e)

None of the other choices is correct.

55.

Draw a circuit with a battery connected to four resistors, R1, R2, R3, and R4, as follows. Resistors R1 and R2 are connected in parallel with each other, resistors R3 and R4 are connected in parallel with each other, and both parallel sets of resistors are connected in series with each other across the battery.

a)
b)
c)
d)
56.

When unequal resistors are connected in parallel in a circuit,

a)

the same current always runs through each resistor.

b)

the potential drop is always the same across each resistor.

c)

the largest resistance has the largest current through it.

d)

the power generated in each resistor is the same.

57.

When unequal resistors are connected in series across an ideal battery,

a)

the same power is dissipated in each one.

b)

the potential difference across each is the same.

c)

the current flowing in each is the same.

d)

the equivalent resistance of the circuit is less than that of the smallest resistor.

e)

the equivalent resistance of the circuit is equal to the average of all the resistances.

58.

As more resistors are added in series to a constant voltage source, the power supplied by the source

a)

increases.

b)

decreases.

c)

does not change.

d)

increases for a time and then starts to decrease.

59.

As more resistors are added in parallel across a constant voltage source, the power supplied by the source

a)

increases.

b)

decreases.

c)

does not change.

d)

increases for a time and then starts to decrease.

60.

The lamps in a string of decorative lights are connected in parallel across a constant-voltage power source. What happens if one lamp burns out? (Assume negligible resistance in the wires leading to the lamps.)

a)

The brightness of the lamps will not change appreciably.

b)

The other lamps get brighter equally.

c)

The other lamps get brighter, but some get brighter than others.

d)

The other lamps get dimmer equally.

e)

The other lamps get dimmer, but some get dimmer than others.

61.

A 9-V battery is hooked up to two resistors in series using wires of negligible resistance. One has a resistance of 5 Ω, and the other has a resistance of 10 Ω. Several locations along the circuit are marked with letters, as shown in the figure. Which statements about this circuit are true? (There could be more than one correct choice.)

a)

The current is exactly the same at points A, B, C, and D.

b)

The current at A is greater than the current at B, which is equal to the current at C, which is greater than the current at D.

c)

The current at A is greater than the current at B, which is greater than the current at C, which is greater than the current at D.

d)

The potential at B is equal to the potential at C.

e)

The potential at D is equal to the potential at C.

62.

A 9-V battery is hooked up to two resistors in series. One has a resistance of 5 Ω, and the other has a resistance of 10 Ω. Several locations along the circuit are marked with letters, as shown in the figure. Through which resistor is energy being dissipated at the higher rate?

a)

the 10-Ω resistor

b)

the 5-Ω resistor

c)

Energy is being dissipated by both resistors at the same rate.

63.

Identical ideal batteries are connected in different arrangements to the same light bulb, as shown in the figure. For which arrangement will the bulb shine the brightest?

a)

A

b)

B

c)

C

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