Coulomb’s Law
Physics ⇒ Electricity and Magnetism
Coulomb’s Law starts at 9 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Coulomb’s Law.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 9
Describe one similarity and one difference between Coulomb’s Law and Newton’s Law of Universal Gravitation.
Describe what is meant by a point charge.
Explain why Coulomb’s Law is not applicable for very large charges or very small distances.
Explain why the force between two charges decreases when the medium between them is not vacuum.
If the charges are brought closer together, what happens to the electrostatic force between them?
If the force between two charges is 8 N and one charge is doubled, what is the new force?
State Coulomb’s Law in words.
What does Coulomb’s Law describe?
What happens to the force between two charges if the distance between them is reduced to half?
What is meant by the term 'relative permittivity' in Coulomb’s Law?
What is the direction of the force on a positive charge due to another positive charge?
What is the effect of increasing the relative permittivity of the medium between two charges?
What is the effect of the sign of charges on the direction of the force between them?
Explain how the force between two charges would change if both the magnitude of each charge and the distance between them are doubled.
State two assumptions made when applying Coulomb’s Law to calculate the force between two charges.
