Free Printable Charge and Coulomb's Law

1.

If you half the distance between two charged objects, what happens to the magnitude of the force between them?

a)

Increased by a factor of 2

b)

Increased by a factor of 4

c)

Decreased by a factor of 2

d)

Decreased by a factor of 4

2.

Which of the following are electrical insulators?

a)

Pure water

b)

Saltwater

c)

Asphalt

d)

Dry cotton

3.

"The algebraic sum of all the electric charges in any closed system is constant."

What does this statement describe?

a)

Quantization of Electric Charge

b)

Conservation of Electric Charge

c)

Principle of Superposition

d)

Conservation of Energy

4.

A glass rod and a cotton shirt are rubbed together. Which material becomes negatively charged?

a)

Cotton shirt

b)

Glass rod

c)

Both

d)

Neither

5.

If we rub together wool and brass, what will be the resulting charge on the brass?

a)

Cannot be determined

b)

Neutral

c)

Positively charged

d)

Negatively charged

6.

What is the mass of a proton?

a)

1.602\times10^{-19}\ kg

b)

$1.675\times10^{-27}\ kg$

c)

$1.673\times10^{-27}\ kg$

d)

$9.11\times10^{-31}\ kg$

7.

How many excess electrons are there in an object with a charge of $-35e$ ? The letter $e$ represents the elementary charge.

a)

-35

b)

35

c)

0

d)

Cannot be determined

8.

If a negative charge is placed on the origin and a positive charge is placed on its right, what is the direction of the force experienced by the positive charge?

a)

North

b)

South

c)

East

d)

West

9.

Rod Z is attracted to rod X, but rod Y is repelled by rod Z. If rod X is negatively charged, what is the charge of rod Y?

a)

Negatively charged

b)

Positively charged

c)

Neutral

d)

Not enough information

10.

If an object has 300 excess electrons, what is its net charge? ( $e$ represents the elementary charge)

a)

0

b)

$+300e$

c)

$-300e$

d)

$\pm300e$

11.

What happens to the magnitude of the force between two charged objects if we double both their charges?

a)

remains constant

b)

doubled

c)

quadrupled

d)

halved

12.

If the distance between two equally-charged objects is tripled, what happens to the magnitude of the electric force experienced by the objects?

a)

decreased by a factor of three

b)

decreased by a factor of six

c)

decreased by a factor of nine

d)

remains constant

13.

What is the value of the Coulomb constant?

a)

8.99\times10^9\ \frac{Nm^2}{C^2}

b)

$8.99\times10^{-9}\ \frac{Nm^2}{C^2}$

c)

$8.99\times10^9\ \frac{C^2}{Nm^2}$

d)

$8.99\times10^{-9}\ \frac{C^2}{Nm^2}$

14.

When an object is charged through induction, the charges in the object are separated. What is the name of this phenomenon?

a)

Conduction

b)

Polarization

c)

Rectification

d)

Filtration

15.

"The principle of the superposition of forces states that the resultant force is the algebraic sum of the forces due to each object."

What is wrong with this statement?

a)

The resultant force is the vector sum of the forces, not the algebraic sum.

b)

This is the principle of the superposition of states, not the superposition of forces.

c)

The resultant force on an object cannot be determined from the other forces.

d)

Nothing is wrong with this statement.

Charge and Coulomb's Law

Total questions: 15

Worksheet time: 8mins

Similar Resources on Wayground