30 Coulomb’s Law Quiz Questions and Answers

Coulomb’s Law is a fundamental principle in physics that describes the electrostatic force between charged particles. It is named after Charles-Augustin de Coulomb, a French physicist who first formulated this law in the late 18th century. Coulomb’s Law is an essential concept in the study of electricity and magnetism, and it plays a crucial role in understanding the behavior of charged particles and electric fields.

Article outline

• Part 1: 30 Coulomb’s Law quiz questions & answers
• Part 2: Download Coulomb’s Law questions & answers for free
• Part 3: Free online quiz creator – OnlineExamMaker

Part 1: 30 Coulomb’s Law quiz questions & answers

Sure! Here are 30 multiple-choice questions about Coulomb’s Law:

1. Coulomb’s Law describes the force between:
a) Electric charges and magnetic fields
b) Electric charges and gravitational fields
c) Electric charges
d) Electric charges and electric fields
Answer: d) Electric charges

2. Who formulated Coulomb’s Law?
a) Isaac Newton
b) Albert Einstein
c) James Clerk Maxwell
d) Charles-Augustin de Coulomb
Answer: d) Charles-Augustin de Coulomb

3. Coulomb’s Law states that the force between two point charges is:
a) Directly proportional to the product of their masses
b) Inversely proportional to the distance between them
c) Inversely proportional to the square of the distance between them
d) Directly proportional to the distance between them
Answer: c) Inversely proportional to the square of the distance between them

4. The SI unit of charge is:
a) Coulomb (C)
b) Newton (N)
c) Ohm (Ω)
d) Ampere (A)
Answer: a) Coulomb (C)

5. Coulomb’s constant, denoted by ‘k’, is approximately equal to:
a) 8.99 x 10^9 N m²/C²
b) 6.67 x 10^-11 N m²/kg²
c) 3.00 x 10^8 m/s
d) 1.60 x 10^-19 C
Answer: a) 8.99 x 10^9 N m²/C²

6. If the distance between two point charges is halved, the electrostatic force between them becomes:
a) Four times stronger
b) Two times stronger
c) Half as strong
d) One-fourth as strong
Answer: a) Four times stronger

7. Two positive point charges are brought closer together. The force between them:
a) Becomes more repulsive
b) Becomes more attractive
c) Remains the same
d) Becomes zero
Answer: a) Becomes more repulsive

8. Two negative point charges are brought closer together. The force between them:
a) Becomes more repulsive
b) Becomes more attractive
c) Remains the same
d) Becomes zero
Answer: b) Becomes more attractive

9. The force between two charges is 18 N. If the distance between them is doubled, the new force will be:
a) 9 N
b) 18 N
c) 36 N
d) 72 N
Answer: a) 9 N

10. The electrostatic force between two point charges is directly proportional to:
a) The magnitude of one charge
b) The magnitude of both charges
c) The distance between the charges
d) The square of the distance between the charges
Answer: b) The magnitude of both charges

11. What happens to the electrostatic force between two charges if they are moved three times farther apart?
a) It becomes one-third as strong
b) It becomes nine times stronger
c) It becomes one-ninth as strong
d) It remains the same
Answer: c) It becomes one-ninth as strong

12. If two charges of +2C and -4C are separated by a distance of 3 meters, what is the force between them?
a) 2 N
b) 8 N
c) 12 N
d) 24 N
Answer: d) 24 N

13. When a positive charge is brought near an uncharged conductor, the conductor acquires a:
a) Positive charge
b) Negative charge
c) Neutral charge
d) Variable charge
Answer: a) Positive charge

14. When two positive charges are placed close to each other, the force between them is:
a) Attractive
b) Repulsive
c) Zero
d) Variable
Answer: b) Repulsive

15. What happens to the force between two charges if the distance between them is tripled?
a) It becomes three times stronger
b) It becomes one-third as strong
c) It becomes nine times weaker
d) It remains the same
Answer: b) It becomes one-third as strong

Part 2: Download Coulomb’s Law questions & answers for free

16. If two charges of +5C and -3C are separated by a distance of 4 meters, what is the force between them?
a) 20 N
b) 60 N
c) 12 N
d) 45 N
Answer: a) 20 N

17. A positive charge exerts an electrostatic force of 8 N on another positive charge. If the distance between the charges is halved, what is the new force?
a) 8 N
b) 32 N
c) 64 N
d) 16 N
Answer: b) 32 N

18. When two negative charges are placed close to each other, the force between them is:
a) Attractive
b) Repulsive
c) Zero
d) Variable
Answer: a) Attractive

19. Two point charges of +2C and -5C are separated by a distance of 2 meters. What is the force between them?
a) 4 N
b) 10 N
c) 20 N
d) 50 N
Answer: b) 10 N

20. If the distance between two point charges is increased by a factor of 4, the new electrostatic force will be:
a) Four times weaker
b) One-sixteenth as strong
c) Four times stronger
d) One-fourth as strong
Answer: b) One-sixteenth as strong

21. A negative charge exerts an electrostatic force of 6 N on a positive charge. If the distance between the charges is doubled, what is the new force?
a) 3 N
b) 6 N
c) 12 N
d) 24 N
Answer: a) 3 N

22. If the distance between two point charges is tripled, the electrostatic force between them becomes:
a) Three times stronger
b) Three times weaker
c) Nine times stronger
d) Nine times weaker
Answer: b) Three times weaker

23. Two positive point charges are placed 2 meters apart. If the magnitude of each charge is doubled, what will be the new force between them?
a) Four times stronger
b) Two times stronger
c) Half as strong
d) One-fourth as strong
Answer: a) Four times stronger

24. The electrostatic force between two charges is 12 N. If the distance between them is tripled, the new force will be:
a) 4 N
b) 12 N
c) 36 N
d) 48 N
Answer: a) 4 N

25. If two charges of +3C and -3C are separated by a distance of 2 meters, what is the force between them?
a) 3 N
b) 6 N
c) 9 N
d) 12 N
Answer: c) 9 N

26. The electrostatic force between two charges is inversely proportional to:
a) The square of their magnitudes
b) The product of their magnitudes
c) The distance between them
d) The square of the distance between them
Answer: d) The square of the distance between them

27. Two negative charges are placed 3 meters apart. If the magnitude of each charge is halved, what will be the new force between them?
a) One-fourth as strong
b) Half as strong
c) Four times weaker
d) Twice as strong
Answer: c) Four times weaker

28. Two positive charges are separated by a distance of 5 meters. If the magnitude of one charge is doubled and the other is halved, what will be the new force between them?
a) Four times stronger
b) Two times stronger
c) Half as strong
d) One-fourth as strong
Answer: a) Four times stronger

29. The electrostatic force between two charges is 24 N. If the distance between them is halved, the new force will be:
a) 12 N
b) 48 N
c) 96 N
d) 6 N
Answer: b) 48 N

30. The electrostatic force between two charges is directly proportional to:
a) The magnitude of one charge
b) The magnitude of both charges
c) The distance between the charges
d) The square of the distance between the charges
Answer: b) The magnitude of both charges

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