WorksheetsElectric Fields and Potential Energy Quiz
Total questions: 100
Worksheet time: 3600secs
An electric field has
direction
magnitude
Both A and B
none of the above
Every proton in the universe is surrounded by its own
gravitational field
electric field
both A and B
none of the above
The direction of electric field lines shows the
direction of the force on a test positive charge
size of the field
strength of the field
all of the above
Electrical potential energy is the energy a charged object has because of its
momentum
location
mass
motion
A small, positively charged object near a positively charged sphere is moved closer to the sphere. The electrical potential energy of the small object
When an electron is brought near a negatively charged sphere, its potential energy increases. The reason this happens is that
A volt is a unit of
charge
electric potential
energy
work
current
How will the top plate be charged if a beam of electrons accelerates from the back of your TV set to the screen, where charged parallel plates create a vertical electric field?
negatively
positively
less than zero.
zero.
The electric field inside an uncharged metal ball is zero. If the ball gains a negative charge, the electric field inside the ball will be
greater than zero.
less than zero.
zero.
unchanged.
A 5-C charge is located near a positively charged sphere so that it has 50 J of electric potential energy. Its electric potential is
2 V.
5 V.
10 V.
20 V.
If you use 20 J of work to push a 2-C charge into an electric field, its voltage with respect to its starting position is
10 V.
less than 10 V.
more than 10 V.
20 V.
If you use 17 J of work to push a charge into an electric field and then release the charge, as the charge flies past its starting position, its kinetic energy is
more than 17 J.
less than 17 J.
17 J.
cannot be determined.
The charging of a capacitor is complete when
the capacitor plates have equal positive charge.
the capacitor plates have equal negative charge.
the potential difference between the capacitor plates is equal to the battery voltage.
the potential difference between the capacitor plates is equal to the 0 V.
The charge of an electron is
positive.
negative.
Electrons have no charge.
zero.
Atomic nuclei of almost all elements consist of
only neutrons.
protons and electrons.
neutrons and electrons.
only protons.
protons and neutrons.
The fundamental force underlying all chemical reactions is
electrical.
gravitational.
centripetal.
nuclear.
none of the above
Electrical forces between charges are strongest when the charges are
far apart.
close together.
The electrical force is constant everywhere.
Coulomb's law says that the force between any two charges depends
directly on the size of the charges.
inversely on the square of the distance between the charges.
both A and B
none of the above
The net charge of a nonionized atom
depends only on the number of electrons it has.
is zero.
usually cannot be determined.
depends only on the number of protons it has.
A positive ion has
more electrons than protons.
more protons than electrons.
a +1 charge always.
If you comb your hair and the comb becomes positively charged, your hair becomes
uncharged.
positively charged.
negatively charged.
A difference between electrical forces and gravitational forces is that electrical forces include
infinite range.
repulsive interactions.
the inverse square law.
separation distance.
none of the above
The common hydrogen atom consists of
one electron.
one proton and one electron.
one proton.
two protons, one neutron, and two electrons.
one neutron and one electron.
In a good insulator, electrons are usually
not moving at all.
free to move around after an impurity has been added.
free to move around.
tightly bound in place.
semi-free to move around.
To be safe in the unlikely case of a lightning strike, it is best to be inside a building framed with
steel.
wood.
either A or B.
Much electronic equipment contains transistors and diodes that are made from semiconductors. Semiconductors
can be very good insulators.
can conduct electricity.
contain helpful impurities.
all of the above
none of the above
Lightning bolts occur between
clouds and the ground.
clouds.
both A and B.
When a charged cloud passes overhead, the ground below is charged by
induction.
polarization.
deduction.
electrification.
Two charged particles held close to each other are released. As they move, the force on each particle increases. Therefore, the particles have
opposite signs.
the same sign.
charges that cannot be determined
How many different kinds of force would act on a proton placed in both an electric field and a gravitational field?
one.
none.
two.
The electrostatic force between two charges located 8 meters apart is 0.10 N. What will the force be between these charges when they are located 2 meters apart?
0.01 N
0.03 N
0.1 N
0.8 N
1.6 N
A 2-C charge and a 4-C charge attract each other with 10 N of force. How much will a 2-C charge and a 12-C charge attract each other when placed the same distance apart?
5 N
12 N
10 N
30 N
60 N
Two charges separated by a distance of 1 meter exert a 2-N force on each other. If the magnitude of each charge is doubled, the force on each charge is
2 N
4 N
8 N
16 N
none of the above
What is the correct answer for question 1, which is about electric fields?
Proton
Gravity
Electric field
Energy
According to question 4, what is associated with potential energy?
Charge
Potential
Sphere
Negative charge
What is the key term related to question 15, which involves an electron?
Nucleus
Proton
Neutron
Charge
What concept is question 16 about, as indicated by the key terms?
Electric field
Chemical reaction
Coulomb's Law
Conservation of Charge
What is the correct answer for question 20, which is about the conservation of charge?
Net charge
Positive
Proton
Sphere
What is charged by friction and contact according to the learning material?
Insulator and electron
Semiconductor and electricity
Comb and charge
Lightning and conductor
What does Coulomb's Law relate to?
Electric and gravitation
Hydrogen and proton
Charge and force
Charge and distance
What is associated with conductors and insulators?
Charging by friction and contact
Charging by induction
Lightning and ground cloud
Semiconductor and electricity
What is the key concept related to conductors and insulators?
Electric and gravitation
Hydrogen and proton
Insulator and electron
Charge and release
What is the phenomenon where a charge is transferred without direct contact?
Charging by friction and contact
Charging by induction
Lightning and conductor
Semiconductor and electricity
What does the learning material specify as the key concept related to lightning and cloud?
Charge and induction
Charge and release
Charge and force
Charge and distance
According to the learning material, what is related to the force between charges?
Electric and gravitation
Hydrogen and proton
Charge and force
Charge and distance
What is the key concept associated with Coulomb's Law as per the document?
Electric and gravitation
Hydrogen and proton
Charge and force
Charge and distance
Atomic nuclei of almost all elements consist of
only protons.
neutrons and electrons.
only neutrons.
protons and neutrons.
If you use 20 J of work to push a 2-C charge into an electric field, its voltage with respect to its starting position is
more than 10 V.
less than 10 V.
10 V.
How many different kinds of force would act on a proton placed in both an electric field and a gravitational field?
none.
two.
one.
If you comb your hair and the comb becomes positively charged, your hair becomes
positively charged.
uncharged.
negatively charged.
A volt is a unit of
electric potential.
charge.
current.
work.
energy.
If you use 17 J of work to push a charge into an electric field and then release the charge, as the charge flies past its starting position, its kinetic energy is
more than 17 J.
17 J.
less than 17 J.
Electrical forces between charges are strongest when the charges are
The electrical force is constant everywhere.
close together.
far apart.
When a charged cloud passes overhead, the ground below is charged by
deduction.
polarization.
electrification.
induction.
A positive ion has
more protons than electrons.
a +1 charge always.
more electrons than protons.
one proton.
The charging of a capacitor is complete when
the capacitor plates have equal positive charge.
the potential difference between the capacitor plates is equal to the battery voltage.
the potential difference between the capacitor plates is equal to the 0 V.
the capacitor plates have equal negative charge.
The common hydrogen atom consists of
one proton and one electron.
one neutron and one electron.
one proton.
one electron.
two protons, one neutron, and two electrons.
Electrical potential energy is the energy a charged object has because of its
mass.
momentum.
volume.
location.
none of the above.
A beam of electrons accelerates from the back of your TV set to the screen. In order to make the beam hit the top of the screen, charged parallel plates create a vertical electric field. How will the top plate be charged?
positively
negatively
Every proton in the universe is surrounded by its own
electric field.
gravitational field.
both A and B
none of the above
The fundamental force underlying all chemical reactions is
gravitational.
electrical.
nuclear.
centripetal.
none of the above
In a good insulator, electrons are usually:
semi-free to move around.
not moving at all.
free to move around after an impurity has been added.
tightly bound in place.
A difference between electrical forces and gravitational forces is that electrical forces include:
the inverse square law.
infinite range.
repulsive interactions.
separation distance.
none of the above
The direction of electric field lines shows the:
direction of the force on a test positive charge.
size of the field.
strength of the field.
all of the above
To be safe in the unlikely case of a lightning strike, it is best to be inside a building framed with:
steel.
wood.
either A or B.
Two charged particles held close to each other are released. As they move, the force on each particle increases. Therefore, the particles have:
opposite signs.
the same sign.
charges that cannot be determined
The electric field inside an uncharged metal ball is zero. If the ball gains a negative charge, the electric field inside the ball will be:
zero.
greater than zero.
less than zero.
The electrostatic force between two charges located 8 meters apart is 0.10 N. What will the force be between these charges when they are located 2 meters apart?
0.8 N
0.1 N
0.03 N
0.01 N
1.6 N
Two charges separated by a distance of 1 meter exert a 2-N force on each other. If the magnitude of each charge is doubled, the force on each charge is
16 N.
2 N.
4 N.
8 N.
none of the above
When an electron is brought near a negatively charged sphere, its potential energy increases. The reason this happens is that
negative charges repel each other.
two like charges go from a position far apart to a position close together.
work was done to bring the charges together.
none of the above
The net charge of a nonionized atom
depends only on the number of protons it has.
depends only on the number of electrons it has.
usually cannot be determined.
is zero.
A 5-C charge is located near a positively charged sphere so that it has 50 J of electric potential energy. Its electric potential is
5 V.
10 V.
250 V.
20 V.
2 V.
Much electronic equipment contains transistors and diodes that are made from semiconductors. Semiconductors
contain helpful impurities.
can conduct electricity.
can be very good insulators.
all of the above
none of the above
Lightning bolts occur between
clouds.
clouds and the ground.
both A and B.
Coulomb's law says that the force between any two charges depends
directly on the size of the charges.
inversely on the square of the distance between the charges.
both A and B
none of the above
A 2-C charge and a 4-C charge attract each other with 10 N of force. How much will a 2-C charge and a 12-C charge attract each other when placed the same distance apart?
a. 10 N
b. 30 N
c. 60 N
d. 5 N
e. 12 N
The charge of an electron is
a. positive.
b. negative.
c. Electrons have no charge.
An electric field has
a. magnitude.
b. direction.
c. Both A and B
A small, positively charged object near a positively charged sphere is moved closer to the sphere. The electrical potential energy of the small object
a. increases.
b. decreases.
c. stays the same.
What is the basic unit of electric potential?
Proton
Gravity
Electric
Volt
According to Coulomb's Law, what can be a key factor in the force between two charges?
Insulator
Reaction
Distance
Gravitation
What is necessary to charge an object by induction?
Battery
Cloud
Conductor
Insulator
What is associated with the conservation of charge?
Positive
Proton
Release
Cloud
What is a key concept in electrical potential energy?
Chemical
Field
Battery
Work
What is a factor that can affect electrical potential energy?
Neutron
Charge
Proton
Gravity
What is a key element in electric fields?
TV
Electron
Gravity
Field
What is necessary for the charging by friction and contact?
Cloud
Insulator
Force
Battery
What is a key factor in electrical energy storage?
Battery
Capacitor
Proton
Gravity
What is released during a lightning event according to Coulomb's Law?
Charge
Proton
Electron
Insulator
What is negatively charged in an electric field?
Metal
Semiconductor
Lightning
Electron
What is the relationship between charge and distance according to Coulomb's Law?
Charge is directly proportional to distance
Charge is inversely proportional to distance
Charge is independent of distance
Charge is squared with distance
What is the key concept related to the conservation of charge?
Net charge is created
Net charge is destroyed
Net charge is transferred
Net charge is constant
What is associated with the potential energy in an electric field?
Charge
Distance
Sphere
Semiconductor
What is a key factor in electric shielding?
Electric field
Charge
Metal
Sphere
Every proton in the universe is surrounded by its own ____.
electric field.
gravitational field.
both A and B
none of the above
The fundamental force underlying all chemical reactions is ____.
nuclear.
centripetal.
gravitational.
electrical.
Much electronic equipment contains transistors and diodes that are made from semiconductors. Semiconductors ____.
can conduct electricity.
contain helpful impurities.
can be very good insulators.
all of the above
The common hydrogen atom consists of ____.
Coulomb's law says that the force between any two charges depends ____.
directly on the size of the charges.
inversely on the square of the distance between the charges.
both A and B
none of the above
A positive ion has ____.
