Quiz about Coulomb Law

Question 1

As two oppositely charged particles approach each other, what happens to the electrical force between them?

Accepted Answer

The attractive force increases

Answer

The magnitude of the electric force decreases

Answer

The repulsive force increases

Answer

The magnitude of their charges increases

Question 2

The Electric Force is strongest when charges are...

Accepted Answer

close together

Answer

far apart

Answer

the electric force is constant everywhere

Question 3

According to Coulomb's Law, what happens to the force between two charges if the charge of one is tripled and the distance between them is also tripled?

Accepted Answer

The force remains unchanged

Answer

The force is tripled

Answer

The force is nine times greater

Answer

The force is reduced to one-third

Question 4

What does Coulomb's Law describe?

Accepted Answer

The force between two charges being directly proportional to the product of their charges and inversely proportional to the square of the distance between them

Answer

The relationship between electric current and magnetic fields

Answer

The rate of flow of electric charge

Answer

The resistance offered by a material to the flow of electric current

Question 5

If the distance between two charges is halved, how does the force between them change according to Coulomb's Law?

Accepted Answer

It increases by four times

Answer

It is halved

Answer

It is quartered

Answer

It is doubled

Question 6

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

Accepted Answer

4X

Answer

2X

Answer

1/2X

Answer

1/4X

Question 7

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

Accepted Answer

it doubles

Answer

it gets cut in half

Answer

it quadruples

Answer

it is cut by 1/4

Question 8

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

Accepted Answer

decreases;inversely

Answer

decreases;directly

Answer

increases;inversely

Answer

increases;directly

Question 9

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

Accepted Answer

Quadruples

Answer

Doubles

Answer

Stays the same

Answer

Reduced by half

Question 10

Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?

Accepted Answer

9E9 N

Answer

9E-9 N

Answer

1.1E10 N

Answer

1.1E-10 N

Question 11

A repulsive force exists between which two particles?

Accepted Answer

Two protons

Answer

Two neutrons

Answer

An electron and a neutron

Answer

An electron and a proton

Question 12

What variable is a Coulomb the unit for?

Accepted Answer

Charge

Answer

Force

Answer

Distance

Answer

Mass

Question 13

If the distance doubles, what happens to the force?

Accepted Answer

Reduced by 1/4

Answer

Reduced by half

Answer

Stays the same

Answer

Quadruples

Question 14

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

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 15

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

Accepted Answer

charge

Answer

quarks

Answer

quantum

Answer

coulomb's constant

Question 16

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

Accepted Answer

distance between charges

Answer

radius of the electron

Answer

radius of the proton

Answer

distance a charge will travel

Question 17

What is the value of Coulomb's Constant?

Accepted Answer

9 x 10⁹ Nm²C^-2

Answer

8.987 Nm²C^-2

Answer

8.987 x 10¹¹ Nm²C^-2

Answer

7.1 x 10^4.5 Nm²C^-2

Question 18

If two equal charges each of 1 C each are separated in air by a distance of 1 km, what is the magnitude of the force acting between them?

Accepted Answer

9 x 103 N

Answer

1 N

Answer

9 x 10⁹ N

Answer

9 x 10⁶ N

Answer

1 x 102 N

Question 19

A point charge (q1) has a magnitude of 3x10^-6C. A second charge (q2) has a magnitude of -1.5x10^-6 C and is located 0.12 m from the first charge. Determine the electrostatic force each charge exerts on the other.

Accepted Answer

-2.81 N

Answer

-4.52 x 10^-3 N

Answer

-83 N

Answer

-9 x 10³ N

Question 20

What is the formula for Coulomb's Law?

Accepted Answer

$$F = k \frac{q_1 q_2}{r^2}$$

Answer

$$F = ma$$

Answer

$$F = G \frac{m_1 m_2}{r^2}$$

Answer

$$F = qE$$

Question 21

If the charge of one particle is doubled and the distance between two charged particles is halved, how does the force between them change according to Coulomb's Law?

Accepted Answer

It quadruples

Answer

It doubles

Answer

It remains the same

Answer

It halves

Question 22

Which of the following best describes the relationship between force and distance in Coulomb's Law?

Accepted Answer

The force is inversely proportional to the square of the distance

Answer

The force is directly proportional to the distance

Answer

The force is inversely proportional to the distance

Answer

The force is directly proportional to the square of the distance

Question 23

In a vacuum, two charges are placed 0.5 meters apart and exert a force of 10 N on each other. What will be the force if the distance is increased to 1 meter?

Accepted Answer

2.5 N

Answer

5 N

Answer

10 N

Answer

20 N

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