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Coulombs law

Total questions: 60

Worksheet time: 2hrs 33mins

Name
Class
Date
1.

A balloon is rubbed on a student's head. What occurs because of this?

a)

Charged particles on the balloon are destroyed

b)

Positively charged particles move from head to balloon

c)

Charged particles from the balloon are released into the air

d)

Negatively charged particles move from head to balloon

2.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
3.

Which is the value of the constant in Coulomb's equation?

a)

k = 9·10-9

b)

k = 9.8

c)

k = 6.67·10-11

d)

k = 9 ·109

4.
Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?
a)
9E-9 N
b)
9E9 N
c)
1.1E10 N
d)
1.1E-10 N
5.
What variable is a Coulomb the unit for?
a)
Charge
b)
Force
c)
Distance
d)
Mass
6.

The unit to measure charge is

a)

Volts

b)

Newtons per coulomb

c)

Coulomb

d)

Joules

7.

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

a)

2X

b)

1/9X

c)

4X

d)

1/4X

8.
What variable do "Newtons" represent?
a)
Electrostatic Charge
b)
Force
c)
Distance
d)
Mass
9.

What does the "k" represent in Coulomb's Law?

a)

charge

b)

Coulomb's Constant

c)

kilometers

d)

distance between charges

10.

Which setup of charged particles shown below has the two exert the most force on one another?

a)
b)
c)
d)
11.

Sticky tape lab: The bottom tape was in place on the table. You smoothed the top tape on top of the bottom tape. The tapes are both still on the table. What happened?

a)

Nothing much

b)

Electrons moved from one tape to another

c)

The sticky part of the top tape got stickier

12.

What is the definition of the term "charge?"

a)

ability to pull something toward itself

b)

ability to push something away from itself

c)

ability to either push something away or pull something toward itself

13.

What charge do electrons have?

a)

positive

b)

negative

c)

no charge

14.

If a strip X attracted F, P, and B, but repelled T, the charge of X is--

a)

The same as T

b)

The same as B

c)

Can't tell; I need more information

15.

In the Sticky Tape Lab, what caused the attraction and repulsion between tapes?

a)

the movement of protons

b)

the movement of electrons

c)

the static position of the electrons

d)

nothing. it just happened by chance

16.

Which two particles are attracted to each other?

a)

Two neutrons

b)

A proton and an electron

c)

Two protons

d)

An electron and a neutron

17.

A repulsive force exists between which two particles?

a)

Two neutrons

b)

An electron and a neutron

c)

An electron and a proton

d)

Two protons

18.

What would a negative value for Fe mean?

a)

The particles are moving away from each other

b)

The particles have the same charge

c)

The particles have opposite charges

d)

The particles are moving towards each other

19.

What does "r" measure?

a)

the distance between the two charged objects

b)

the amount of charge carried by the objects

c)

the amount of force between two charged objects

d)

the constant value for forces between the objects

20.

What does Fe stand for?

a)

the electrostatic force

b)

the symbol for iron

c)

the constant for the charges

d)

the charges of the particles

21.

Electric charges exert which kind of force?

a)

a field force

b)

a contact force

c)

a gravitational force

d)

a frictional force

22.

When charge increases, electrostatic force ____________; we call this relationship ____________ proportional

a)

decreases;directly

b)

decreases;inversely

c)

increases;inversely

d)

increases;directly

23.

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

a)

Quadruples

b)

Doubles

c)

Stays the same

d)

Reduced by half

24.

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

a)

it doubles

b)

it is cut in half

c)

it quadruples

d)

it is cut by 1/4

25.

What would a negative value for Fe mean?

a)

The particles are moving away from each other

b)

The particles have the same charge

c)

The particles have opposite charges

d)

The particles are moving towards each other

26.

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

a)

increase

b)

decrease

c)

stay the same

d)

first increase, then decrease

27.

A repulsive force exists between which two particles?

a)

Two neutrons

b)

An electron and a neutron

c)

An electron and a proton

d)

Two electrons

28.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
29.
If the distance doubles, what happens to the force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples
30.
If each of the charges doubles, what happens to the force?
a)
Quadruples
b)
Doubles
c)
Stays the same
d)
Reduced by half
31.

Two objects attract with a force of 18 N, if the distance triples, the force will be

a)

2 N

b)

18 N

c)

9 N

d)

54 N

32.

Two objects attract with a force of 18 N, if the distance is halved, the force will be

a)

9 N

b)

72 N

c)

36 N

d)

54 N

33.

Two objects attract with a force of 18 N. If the distance is decreased to 1/3, the new force is

a)

36 N

b)

54 N

c)

9 N

d)

162 N

34.

Two objects attract with a force of 18 N. If the distance decreased to 1/4, the force will be

a)

72 N

b)

288 N

c)

4.5 N

d)

36 N

35.

In the Coulomb's Law Equation F=KqAqBd2F=\frac{Kq_Aq_B}{d^2}  , what does the variable "q" represent? 

a)

Distance between charges

b)

Charge size and sign

c)

Constant 

d)

Mass

36.

Which of the following materials is mostly likely to NOT BE MAGNETIC?

a)

A metal nail

b)

A metal paperclip

c)

Iron filings

d)

a cloth towel

37.

Magnets can interact without touching.

a)

True

b)

False

38.

The area of magnetic force around a magnet is known as its _____________.

a)

magnetic field

b)

magnetic declination

c)

magnetic fan lines

d)

magnetic tan lines

39.

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

40.

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

41.

What is the formula for Coulomb's Law?

a)

F=kq1×q2r2F = k \frac{q_1 \times q_2}{r^2}

b)

F=kq1+q2rF = k \frac{q_1 + q_2}{r}

c)

F=kq1−q2r2F = k \frac{q_1 - q_2}{r^2}

d)

F=kq1×q2rF = k \frac{q_1 \times q_2}{r}

42.

Coulomb’s Law states that the electrostatic force is ____________ proportional to the square of the distance between the charged objects.

a)

Discreetly

b)

Indiscriminately

c)

Inversely

d)

Directly

43.

Label the parts of the formula for Coulomb's Law.

a)

Coulomb's constant 9×1099\times10^9

b)

distance

c)

electrostatic force

d)

charge of object 1

e)

charge of object 2

1
2
3
4
5
1)
2)
3)
4)
5)
44.

According to Coulomb's Law, when the distance increases, the electrostatic force ____________.

a)

increases

b)

decreases

c)

remains unchanged

d)

has no relationship to distance

45.

A repulsive force exists between which two particles?

a)

Two neutrons

b)

An electron and a neutron

c)

An electron and a proton

d)

Two protons

46.

Which two particles are attracted to each other?

a)

Two neutrons

b)

A proton and an electron

c)

Two protons

d)

An electron and a neutron

47.

Which setup of charged particles shown below has the two exert the most force on one another?

a)
b)
c)
d)
48.

If the distance between two charges is reduced by half, what happens to the force?

a)

Quadruples (4x)

b)

Doubles (2x)

c)

Is quartered (1/4)

d)

Is halved (1/2)

49.

A repulsive force exists between which two particles?

a)

Two neutrons

b)

An electron and a neutron

c)

An electron and a proton

d)

Two electrons

50.
The Electric Force is strongest when charges are...
a)
close together
b)
far apart
c)
the electric force is constant everywhere
51.

Coulomb's law says that the force between any two charges depends

a)

directly on the size of the charges

b)

inversely on the square of the distance between the charges

c)

both are correct

52.

Which is the subatomic particle with a negative charge?

a)
electron
b)
proton
c)

atom

d)
neutron
53.

According to Newton's Law of Universal Gravitation, as the distance between 2 objects increases, the gravitational attraction between the 2 objects...

(a)  

54.

What does the symbol "G" represent in Newton's Law of Universal Gravitation?

a)

Gravity

b)

Gravitational constant

c)

Gravitational variable

d)

Gravitational force

55.
What is the unit of electric charge?
a)
Volts
b)
Amps
c)
Coulombs
d)
Ohms
56.

What does the symbol "k" represent in Coulomb's Law?

a)

Net charge

b)

Average Coulombs

c)

Constant charge

d)

Coulomb's constant

57.

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

a)

2X

b)

1/9X

c)

4X

d)

1/4X

58.

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

a)

Quadruples

b)

Doubles

c)

Stays the same

d)

Reduced by half

59.
Two like charges
a)
 neutralize each other.
b)
repel each other. 
c)
must be neutrons. 
d)
attract each other.
60.
An atom loses an electron.  What type of charge does it have now?
a)
positive
b)
negative

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