Quiz about Coulomb's Law

Question 1

What does Coulomb's Law describe?

Accepted Answer

The force between two charged objects

Answer

The energy of a photon

Answer

The speed of light in a vacuum

Answer

The gravitational force between two masses

Question 2

According to Coulomb's Law, the force between two charges is directly proportional to the product of the charges and inversely proportional to what?

Accepted Answer

The square of the distance between them

Answer

The sum of the charges

Answer

The cube of the distance between them

Answer

The square root of the distance between them

Question 3

Which of the following is the correct expression for Coulomb's Law?

Accepted Answer

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

Answer

$$F = ma$$

Answer

$$E = mc^2$$

Answer

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

Question 4

In Coulomb's Law, what does the constant 'k' represent?

Accepted Answer

Coulomb's constant

Answer

Gravitational constant

Answer

Planck's constant

Answer

Boltzmann's constant

Question 5

If the distance between two charges is doubled, what happens to the force between them according to Coulomb's Law?

Accepted Answer

It becomes one-fourth

Answer

It doubles

Answer

It remains the same

Answer

It becomes half

Question 6

Coulomb's Law is applicable in which type of medium?

Accepted Answer

All of the above

Answer

Vacuum

Answer

Water

Answer

Air

Question 7

Which unit is used to measure electric charge in Coulomb's Law?

Accepted Answer

Coulomb

Answer

Newton

Answer

Joule

Answer

Watt

Question 8

What is the dimensional formula of the force in Coulomb's Law?

Accepted Answer

$$MLT^{-2}$$

Answer

$$ML^2T^{-2}$$

Answer

$$ML^{-1}T^{-2}$$

Answer

$$M^0L^0T^0$$

Question 9

Coulomb's Law is similar in form to which other fundamental law of physics?

Accepted Answer

Newton's Law of Universal Gravitation

Answer

Ohm's Law

Answer

Hooke's Law

Answer

Boyle's Law

Question 10

What happens to the force between two charges if one of the charges is tripled?

Accepted Answer

The force triples

Answer

The force doubles

Answer

The force remains the same

Answer

The force halves

Question 11

In an experiment, two charges are placed 1 meter apart and experience a force of 9 N. If the distance is reduced to 0.5 meters, what is the new force?

Accepted Answer

36 N

Answer

18 N

Answer

4.5 N

Answer

9 N

Question 12

Which of the following is a real-world application of Coulomb's Law?

Accepted Answer

Designing capacitors

Answer

Calculating gravitational forces

Answer

Measuring temperature

Answer

Determining sound speed

Question 13

What is the effect of a dielectric medium on the force between two charges according to Coulomb's Law?

Accepted Answer

It decreases the force

Answer

It increases the force

Answer

It has no effect

Answer

It doubles the force

Question 14

If two charges are of opposite signs, what is the nature of the force between them according to Coulomb's Law?

Accepted Answer

Attractive

Answer

Repulsive

Answer

Neutral

Answer

Zero

Question 15

Which of the following factors does NOT affect the force between two charges in Coulomb's Law?

Accepted Answer

The color of the charges

Answer

The magnitude of the charges

Answer

The distance between the charges

Answer

The medium between the charges

Coulomb's Law

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