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electrostatics

Total questions: 171

Worksheet time: 6hrs 42mins

Name
Class
Date
1.
Insulators are different than conductors in that insulators ____.
a)
do not contain electrons or protons 
b)
 do not contain any charge
c)
have a weaker affinity for electrons 
d)
do not allow charge to freely move 
2.
Consider the conduction charging shown. 
a)
Electrons move from the insulating stand into the sphere.
b)
Protons move from the bar into the sphere.
c)
Electrons move from the charged metal bar into the sphere.
d)
Protons move from the sphere into the negatively charged bar.
3.
A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod
a)
gains electrons
b)
loses electrons
c)
gains protons
d)
loses protons
4.
 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
5.
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 
6.
Two electrically charged identical-sized metal spheres, A (charge of -4) and B (charge of +8). If the spheres are brought into contact, which sphere will have a net gain of electrons?
a)
both A and B
b)
neither
c)
only A
d)
only B
7.
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
a)
protons are transferred from the wool to the rod
b)
protons are transferred from the rod to the wool
c)
electrons are transferred from the rod to the wool
d)
electrons are transferred from the wool to the rod
8.
A positively charged rod is held near the knob of a neutral electroscope. What best describes what will happen to the leaves?
a)
the leaves will spread apart and be positive
b)
the leaves will spread apart and be negative
c)
the leaves will stay closed and be positive
d)
the leaves will stay closed and be negative
9.
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.
10.
Which net charge could be found on an object?
a)
4.8 x 10-19 C
b)
1.8 x 10-19 C
c)
3.0 x 10-19 C
d)
2.8 x 10-19 C
11.
Metal sphere A has a charge of +12 elementary charges and identical sphere B has a charge of +16 elementary charges. After the two spheres are brought into contact and separated, the charge on sphere A is
a)
+14 elementary charges
b)
+28 elementary charges
c)
+2 elementary charges
d)
-2 elementary charges
12.
Three charged metal spheres, X, Y, and Z, are on insulating stands. All three spheres are simultaneously brought into contact with each other and then returned to their original positions.
Which statement best describes the charge of the spheres after this procedure is completed?
a)
All the spheres will end up with the same charge
b)
All the spheres are neutral
c)
Sphere Y has a greater charge than spheres X or Z
d)
Each sphere retains the same charge that it had originally
13.
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
14.
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
15.
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
16.
Two similar metal spheres, A and B, have charges of +2.0 x 10-6 coulomb and +1.0 x 10-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?
a)
2.0N
b)
4.0N
c)
8.0N
d)
1.0N
17.
A metal sphere having an excess of +5 elementary charges has a net electric charge of
a)
8.0 x 10-19 C
b)
8.0 x 1019 C
c)
1.6 x 10-19 C
d)
5.0 x 10-19 C
18.
Metal sphere A has a charge of -2 units and an identical metal sphere, B, has a charge of -4 units. If the spheres are brought into contact with each other and then separated, B will _____
a)
gain 1 electron
b)
lose 1 electron 
c)
gain 3 electrons
d)
lose 3 electrons
19.
A negatively charged rod touches the knob of a neutral electroscope. Which  best represents the distribution of charge on the electroscope.
a)
both the knob and leaves become positive
b)
both the knob and leaves become negative
c)
the knob becomes negative and the leaves become positive
d)
the knob becomes positive and the leaves become negative
20.
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
a)
protons are transferred from the wool to the rod
b)
protons are transferred from the rod to the wool
c)
electrons are transferred from the rod to the wool
d)
electrons are transferred from the wool to the rod
21.

When an object gains electrons it becomes __________

a)

Neutral

b)

Positively charged

c)

Negatively charged

22.

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

a)

positively charged because it has excess electrons

b)

negatively charged because it has excess electrons

c)

positively charged because it has a deficiency of electrons

d)

negatively charged because it has a deficiency of electrons

23.

Which statement is true of a positively charged object?

a)

Positively charged objects do not contain any electrons.

b)

Positively charged objects do not contain neutrons or electrons.

c)

There is a lack of electrons on a positively charged object.

d)

The protons and the electrons are both positively charged on such objects.

24.

Which image shows a neutral conductive pith ball after a positively charged balloon is brought near the left side, but doesn't touch?

a)

A

b)

B

c)

C

d)

D

25.

After a balloon is rubbed against wool, the two objects will ________ each other because they have ___________ charges

a)

attract; like

b)

attract, opposite

c)

repel; like

d)

repel; opposite

26.

When two objects are rubbed together, there is a transfer of electrons. How do you determine which object acquires the transferred electrons?

a)

Always transfer from the bigger to the smaller object, to make it even

b)

Transfer is based on the initial charge of the two objects

c)

Transfer is based on how much electron affinity that each object has

d)

Always transfer from the more negative to the more positive object

27.

When a charged object contacts another object (one is usually a conductor), there is a transfer of electrons. How do you determine which object acquires the transferred electrons?

a)

Always transfer from the bigger to the smaller object, to make it even

b)

Transfer is based on the initial charge of the two objects

c)

Transfer is based on how much electron affinity that each object has

d)

Always transfer from the more negative to the more positive object

28.

Which electrostatics phenomena is shown in this picture?

a)

Contact

b)

Friction

c)

Grounding

d)

Electron Shifting

29.

What method of static charging is shown in this picture

a)

Contact

b)

Friction

c)

Grounding

d)

Electron Shifting

30.

Why does the child's hair stick up?

a)

The boy is grounded since he's at the bottom of the slide

b)

He gained a charge from the slide, and since he's not grounded, his hairs have the same charge so they repel one another

c)

He gained a charge from the slide, and since he's not grounded, his hairs have opposite charges so they repel one another

d)

When hair is neutral, some have a positive side and some have negative side, so they will attract to each other, making it stand up

31.

What is the end result of charging by contact?

a)

Both object have the same charge, so they will attract one another

b)

Both object have the same charge, so they will repel one another

c)

Both object have the opposite charge, so they will attract one another

d)

Both object have the opposite charge, so they will repel one another

32.

What is the end result of charging by friction?

a)

Both object have the same charge, so they will attract one another

b)

Both object have the same charge, so they will repel one another

c)

Both object have the opposite charge, so they will attract one another

d)

Both object have the opposite charge, so they will repel one another

33.

Which image is NOT a conductor?

a)

A

b)

B

c)

C

d)

D

e)

NONE of the above

34.

After grounding, how will objects interact?

a)

Both will have the same charge, so they attract one another

b)

Both will be neutral, so they will attract one another

c)

Botn will be neutral, so they will repel one another

d)

Both will be neutral, so they will not attract nor repel

35.

This image shows the before picture, when a balloon is rubbed with polyester. Identify the correct after picture.

a)
b)
c)
d)
36.

A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to

a)

The balloon is charged neutral, so is the wall, so it attracts to the wall

b)

The balloon is charged opposite the wall, so it attracts to the wall

c)

The balloon has a charge, so it attracts the neutral wall

d)

The wall grounds the balloon, so it sticks

37.

Grounding happens when...

a)

A neutral object comes into contact with another neutral object

b)

A charged object is rubbed against another charged object

c)

A neutral object touches a MASSIVE conductive object

d)

A charged object touches a MASSIVE conductive object

38.

Examine Before and After picture. Why do electrons move the way they did?

a)

This is grounding - electrons want to even out

b)

This is charging by contact - electrons go to the larger object

c)

This is charging by contact - electrons go from the object with less e- affinity to more e- affinity.

d)

This is charging by contact - electrons want to even out

39.

Examine the picture. What is true about it?

a)

Both objects are insulators

b)

Both objects are conductors

c)

Sphere is an insulator and person is a conductor

d)

Sphere is a conductor and person is an insulator

40.
Electric charges that are alike _______ each other.
a)
Attract
b)
Repel
41.
The charge of an electron is 
a)
positive. 
b)
negative. 
c)
Electrons have no charge
42.
An atom loses an electron.  What type of charge does it have now?
a)
positive
b)
negative
43.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
44.
If two balloons have the same charge, what will happen if you place them close to each other?
a)
Nothing
b)
They will be attracted
c)
They will pop
d)
They will push each other away.
45.
What is the name of this device that is used to detect charges?
a)
beaker
b)
electroscope
c)
van de graff generator
d)
chargometer
46.
The SI unit of charge is
a)
the ampere
b)
the newton
c)
the coulomb
d)
the joule
47.
Insulators are different than conductors in that insulators ____.
a)
do not contain electrons or protons 
b)
 do not contain any charge
c)
have a weaker affinity for electrons 
d)
do not allow charge to freely move 
48.
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 
49.
When you charge a balloon by rubbing it on your hair this is an example of what method of charging?
a)
Friction
b)
Conduction
c)
Grounding
d)
Induction
50.

When an object gains electrons it becomes __________

a)

Neutral

b)

Positively charged

c)

Negatively charged

51.

When a silver atom looses an electron, its net charge (in coulombs) is

a)

+1

b)

-1

c)

+1,6 x 10-19

d)

-1,6 x 10-19

52.

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

a)

positively charged because it has excess electrons

b)

negatively charged because it has excess electrons

c)

positively charged because it has a deficiency of electrons

d)

negatively charged because it has a deficiency of electrons

53.

What are the charges of a proton, neutron, and electron (in order)

a)

positive, negative, neutral

b)

negative, neutral, positive

c)

neutral, positive, negative

d)

positive, neutral, negative

54.

What is the end result of charging by contact?

a)

Both object have the same charge, so they will attract one another

b)

Both object have the same charge, so they will repel one another

c)

Both object have the opposite charge, so they will attract one another

d)

Both object have the opposite charge, so they will repel one another

55.
Electric charge is neither created nor destroyed, but can be rearranged.
a)
true
b)
false
56.

Two like charges

a)

neutralize each other.

b)

repel each other.

c)

must be neutrons.

d)

attract each other.

57.

An atom loses an electron. What type of charge does it have now?

a)

positive

b)

negative

58.

What does it mean when the electric field lines are close together?

a)

the field is positive

b)

the field is negative

c)

The field is strong

d)

the field is weak

59.

Charged objects are not attracted to neutral objects

a)

True

b)

False

60.

Which of the following is not a good conductor of electricity?

a)

copper

b)

silver

c)

Glass

d)

aluminum

61.

Which of the following labeled points is in the region with the strongest force of electric charge

a)

A

b)

B

c)

C

d)

D

62.

When the distance between two charges is halved, the electrical force between the charges

a)

quadruples

b)

reduces to one fourth

c)

halves

d)

doubles

63.

If two balloons have the same charge, what will happen if you place them close to each other?

a)

Nothing

b)

They will be attracted

c)

They will pop

d)

They will push each other away.

64.

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

65.

Two similar metal spheres, A and B, have charges of +2.0 x 10-6 coulomb and +1.0 x 10-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?

a)

2.0N

b)

4.0N

c)

8.0N

d)

1.0N

66.

which is the field for opposite charges

a)
b)
c)
d)
67.

2 charged objects both feel a force of 200 N. If q1 becomes 3 times bigger, what is the new force

a)

203

b)

600

c)

66.7

d)

1800

68.

2 charges are 20 cm apart and feel a force of 500 N. if the distance between them becomes 60 cm, what is the new force

a)

4500

b)

540

c)

1500

d)

55.6

69.

2 charges feel a force of 40 N. if we cut the distance between them in half, what is the new force they feel

a)

20

b)

80

c)

160

d)

10

70.
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
71.
Calculate the force exerted between two charged objects separated by a distance of 0.6 m. One object has a charge of -5 C and the other has a charge of +2.0 C.
a)
-1.5E-11 N
b)
2.5E-11 N
c)
-2.5E11 N
d)
-7.5E-10 N
72.
The plastic covering is there to:
a)
Provide a conductor for electrical energy to flow.
b)
Provide an insulator so that electrical energy will not pass outside of the wires.
c)
Provide a conductor so that electrical energy can NOT flow.
d)
Provide an insulator so that electrical energy can flow.
73.
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
74.
What is current measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
75.
What is resistance measured in?
a)
Ω (Ohms)
b)
V (Volts)
c)
A (Amps)
d)
W (Watts)
76.
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
77.
What is voltage?
a)
The amount of electric potential energy per one coulomb of charge
b)
The amount of 1 coulomb of charge per unit of potential energy
c)
The number of volts per coulomb
d)
The amount of electric potential energy per volt
78.
Current times Resistance equals
 (I X R)
a)
Power
b)
Voltage
c)
Amperage
d)
Ohm
79.
If the Voltage is increased and the resistance stays the same, Current will
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
80.
If the Voltage stays the same and Resistance is increased, Current will 
a)
Increase
b)
Decrease
c)
Stay the same
d)
X
81.
The mathematical relationship among Voltage, Current, and Resistance
a)
Faraday's Law
b)
Tesla's Law
c)
Edison's Law
d)
Ohm's Law
82.
Which circuit diagram matches this picture of a circuit?
a)
A
b)
B
c)
C
d)
D
83.
Where does electricity enter and exit the bulb?
a)
1 and 2
b)
2 and 3
c)
3 and 4
d)
4 and 1
84.
Which part of the bulb gives off light? 
a)
1
b)
2
c)
3
d)
4
85.
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
86.
One D size battery produces 1.5 volts. How many total votes would 20 D-cell batteries produce?
a)
7.5 volts
b)
30.0 volts
c)
21.5 volts
d)
35.5 volts
87.
In the picture, what powers the circuit?
a)
1
b)
2
c)
3
d)
4
88.
In the picture, which is the receiver (receiving the electricity)?
a)
1
b)
2
c)
3
d)
4
89.
In the hidden circuit box, you saw that #2 and #5 were connected with a piece of wire. Also, #2 and #7 were connected. If you closed the box and used your circuit tester to touch #5 and #7, the bulb would light. 
a)
True
b)
False
90.
Which of these symbols represents a switch? Select the symbol for a switch from the choices provided. 
a)
A
b)
B
c)
C
d)
D
91.
Which diagram shows two bulbs in a series?
a)
1
b)
2
c)
3
d)
4
92.
What voltage is needed to cause a 2A current flow through a 10Ω resistor?
a)
5V
b)
0.2V
c)
20V
d)
200V
93.
What voltage is needed to cause a 50A current flow through a 10Ω resistor?
a)
15V
b)
500V
c)
500 kV
d)
0.2V
94.
What resistance is needed to cause a 20A current flow because of a 100V battery?
a)
0.2Ώ
b)
2000Ώ
c)
120Ώ
d)
5Ώ
95.
What word means how much energy is given to / removed from the electrons.
a)
Current
b)
Voltage
c)
Resistance
d)
Power
96.
If the battery produced 12.6 Volts and 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
97.
If an object has the same number of positive and negative charges, its electrical charge is...
a)
positive
b)
negative
c)
neutral or no charge
d)
opposite
98.
True or False
A positively charged object has lost electrons
a)
True
b)
False
99.
True or False
A negatively charged object has lost protons
a)
True
b)
False
100.
Materials that tightly hold on to their electrons are considered 
a)
Good conductors
b)
Good insulators
c)
Good anti-static agents
d)
Useful for storing charge
101.
Which one of these objects is a good insulator
a)
Copper wire
b)
Glass
c)
Aluminum 
d)
Gold
102.
Materials that easily loose or accept electrons are considered
a)
Good conductors
b)
Good insulators
c)
Good anti-static agents
d)
Good for storing charge
103.
What is the major difference between static electricity and current electricity?
a)
Current electricity involves a continuous flow of neutrons; static electricity is a sudden transfer of protons
b)
Current electricity can be deadly; static electricity is almost always safe
c)
In current electricity, there's a single transfer of electrons; in static electricity, there's a steady flow of electrons
d)
Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons
104.
Charge separation in clouds is one way
a)
that freezing rain occurs
b)
that lightning occurs
c)
that low pressure system occurs
d)
that a tornado occurs
105.
Which term is not a method for charging an object with static electricity
a)
Alternating Current
b)
Induction
c)
Conduction
d)
Friction
106.
What method of static charging is shown in this picture
a)
Polarization
b)
Friction
c)
Induction
d)
Conduction
107.
A circuit that has two or more paths that electricity can follow
a)
parallel circuit
b)
series cirucit
c)
open circuit
d)
closed circuit
108.
If one burned out bulb causes all of the lights to fail in a circuit, what might you conclude?
a)
It is a parallel circuit.
b)
A heavier wire is needed.
c)
It is a series circuit.
d)
More batteries are needed.
109.
A student added another light to an electrical circuit and all the lights became dimmer in the circuit.  What is most likely the cause of the dimmer lights?
a)
The batteries are weak.
b)
The circuit is a parallel circuit.
c)
The light bulbs are hot.
d)
The circuit is a series circuit.
110.
Lightning is _____.
a)
a buildup of neutrons
b)
harmless
c)
a high-voltage electric current
d)
a large discharge of static electricity
111.
An object becomes charged when the atoms in the object gain or lose
a)
electrons
b)
protons
c)
neutrons
d)
all of the above
112.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
113.
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 
114.
At which point is the electric field the weakest?
a)
A because it is the furthest away
b)
A because the field lines are further apart
c)
C because the field lines are further apart
d)
C  because it is the furthest away
115.
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
116.
Ms Jo Jo rubbed two balloons with a piece of wool. What will happen when the balloons are brought near each other?
a)
The balloons will repel each other.
b)
The balloons will attract each other.
c)
The balloons will become positively (+) charged.
d)
The balloons will pop.
117.
If a substance has a higher number of electrons than protons on its surface, what type of charge does it have?
a)
A positive charge.
b)
A negative charge.
c)
A neutral charge
d)
No charge at all
118.
What happens when you touch a metal doorknob after rubbing your shoes on the carpet?
a)
The doorknob sends a burst of electric current into your body
b)
Millions of electrons go from your finger into the doorknob
c)
The doorknob sends millions of electrons into your finger
d)
our finger becomes negatively charged
119.
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
120.

The difference between attraction and repulsion is that to attract is to pull something closer and repel is to push something away.

a)

True

b)

False

121.

the positively charged particle in an atom, never leaves the nucleus, determines the element

a)

proton

b)

neutron

c)

electron

122.

the negatively charged particle in an atom, moves freely, can be released, shared, or “stolen” from an atom

a)

proton

b)

neutron

c)

electron

123.

What kind of circuit is this?

a)

series

b)

parallel

124.

What type of circuit is show in the image?

a)

Series Circuit

b)

Parallel Circuit

125.

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.

126.
Which of these substances conducts electricity the best?
a)
wood
b)
brick
c)
copper
d)
plastic
127.

Recap:

Coulomb’s law states that the force between two charged objects will __________ when the magnitude of the object’s charge increases.

Coulomb’s law also states that the force between two charged objects will __________ when the distance between objects increases.

a)

increase; increase

b)

increase; decrease

c)

decrease; increase

d)

decrease; decrease

128.
What variable do Coulombs represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
129.
When distance increases, electrostatic force ____________; we call this relationship ____________ proportional
a)
decreases;directly
b)
decreases;inversely
c)
increases;inversely
d)
increases;directly
130.
What variable do "Newtons" represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
131.
When distance increases, electrostatic force ____________; we call this relationship ____________ proportional
a)
decreases;directly
b)
decreases;inversely
c)
increases;inversely
d)
increases;directly
132.

The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the distance doubles?

a)

4.8 N

b)

1.2 N

c)

.6 N

d)

.3 N

133.

The image shows two charged particles with a force of 2.4 N. What would you predict the force of interaction would be when the magnitude of charge on q2 doubles?

a)

9.6 N

b)

4.8 N

c)

1.2 N

d)

.6 N

134.

Voltage divided by Resistance

(V / R)

a)

Current

b)

Power

c)

Ohms

d)

Watts

135.

Voltage divided by Current

(V / I)

a)

Current

b)

Power

c)

Resistance

d)

Watts

136.
In a good insulator, electrons are usually
a)
free to move around
b)
free to move around after an impurity has been added
c)
semi-free to move around
d)
tightly bound in place
137.
How many electrons are necessary to produce 1.0 C of negative charge? (e = 1.60 × 10-19 C)
a)
6.3 × 1018 
b)
6.3 × 109 
c)
1.6 × 1019 
d)
1.6 × 109 
138.

The figure shows a neutral glass rod and a positively charged metal sphere.


Which of the following best describes the movement of charges as this glass rod touches the sphere?

a)

Positive charges move from the sphere to the glass rod.

b)

Negative charges move from the sphere to the glass rod.

c)

Negative charges move from the glass rod to the sphere.

d)

Positive charges move from the glass rod to the sphere.

139.

In which of the following circuits will all of the remaining light bulbs go out if bulb 3 burns out?

a)
b)
c)
d)
140.

Irene bought a new house and has decided to rewire it. She wants to be able to turn

some lights off and have the others remain lit. What type of circuits should she use and

why?

a)

She should use parallel circuits because when one light turns off, the other lights remain lit.

b)

She should use series circuits because when one light turns off, the other lights remain lit.

c)

She should use parallel circuits because when one light turns off, the others turn off, too.

d)

She should use series circuits because when one light turns off, the others turn off, too.

141.

An electric current is traveling in a wire. A compass is placed under the wire with the current flowing from north to south. In response, the compass needle will-

a)

rotate because of a magnetic force that acts on the needle

b)

rotate because of an electric force that acts on the needle

c)

not move because moving electric charges do not exert magnetic forces on the needle

d)

not move because moving electric charges do not exert electric forces on the needle

142.

An electric current flows in a wire. What is one result?

a)

a magnetic field is created

b)

any nearby magnetic fields are destroyed

c)

nearby magnets lose their strength

d)

the metal of the wire cannot be affected by magnets

143.

Which of the following is a series circuit?

a)
b)
c)
d)
144.

Which of the following is a simple parallel circuit?

a)
b)
c)
d)
145.

Which switch, when opened, will make the light go out?

a)

Q

b)

R

c)

S

d)

T

146.

Which circuit will not light the bulb?

a)
b)
c)
d)
147.

The difference in electrical potential energy between two places is called …………...

a)

resistance

b)

friction

c)

induction

d)

voltage

148.
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
149.
a)

Battery

b)

Lines

c)

Resistor

d)

bulb

150.
a)

resistor

b)

Ammeter

c)

Voltmeter

d)

Switch

151.
a)

Ampere

b)

Switch

c)

Bulb

d)

Battery

152.
a)

voltage

b)

Voltmeter

c)

Volume

153.
a)

Ammeter

b)

Ampere

c)

And

154.
a)

zig zag

b)

Resistor

c)

Ammeter

155.

What is not needed in order to create a working circuit?

a)

battery (power source)

b)

lightbulb

c)

current

d)

closed circuit

156.

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

157.

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

158.

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

159.

What is current?

a)

the amount of push the electrical source supplies to the circuit

b)

how much a given device resists the flow of electric current

c)

flow of electric charge

d)

none of the above

160.

What is resistance?

a)

the amount of push the electrical source supplies to the circuit

b)

how much a given device resists the flow of electric current

c)

flow of electric charge

d)

none of the above

161.

If a circuit had 4 D-Cell batteries (each 1.5 V) and a lightbulb with resistance of 2 ohms, what is the current that flows through the circuit?

a)

2 A

b)

3 A

c)

6 A

d)

8 A

162.

A simplified conventional graphical representation of an electrical circuit.

a)

Circuit drawing

b)

Block diagram

c)

Charts

d)

Layout Plan

163.

Bending water with a charged balloon is an example of what phenomenon?

a)

friction

b)

polarization

c)

conduction

d)

induction

164.

During a lab a balloon was rubbed with a wooly fabric. This is an example of which type of charging?

a)

conduction

b)

friction

c)

induction

d)

polarization

e)

grounding

165.

Lightning occurs because ___.

a)

the negative charges at the bottom of clouds are attracted to the positive charges on the ground.

b)

the positive charges at the bottom of clouds are attracted to the negative charges on the ground.

c)

the positive and negative charges inside clouds are attracted to each other

d)

All of these reasons are correct.

166.

What happens to the force between two charged objects when you double the distance between them?

a)

becomes 2X greater

b)

becomes 1/2 as large

c)

becomes 4X greater

d)

becomes 1/4 as large

167.

If the value of each of the charges doubles, what happens to the force?

a)

Quadruples

b)

Doubles

c)

Stays the same

d)

Reduced by half

168.

The graph shows the relationship between the force of interaction and the magnitude(size) of charge. What type of relationship is this?

a)

Direct

b)

Indirect

c)

Inverse

d)

Reverse

169.

Which do you expect to have the brightest light?

a)

1

b)

2

c)

3

d)

4

170.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons 
171.

What's your favorite class?

a)

Physics

b)

PE

c)

Lunch

d)

English

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