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Questions and Answers
What is the significance of the value of k in Coulomb's law?
What is the significance of the value of k in Coulomb's law?
- It determines the distance between two charges.
- It determines the force of attraction between two charges.
- It determines the type of charge, whether positive or negative.
- It determines the size of the unit of charge. (correct)
What is the unit of charge that results from the choice of k in SI units?
What is the unit of charge that results from the choice of k in SI units?
- Newton
- Ampere
- Tesla
- Coulomb (correct)
What is the magnitude of the electrical force of repulsion between two charges of 1 C each at a distance of 1 m in vacuum?
What is the magnitude of the electrical force of repulsion between two charges of 1 C each at a distance of 1 m in vacuum?
- 9 × 10^8 N
- 9 × 10^9 N (correct)
- 9 × 10^10 N
- 9 × 10^7 N
What is implicit in Coulomb's law?
What is implicit in Coulomb's law?
What is the assumption made when considering the charged metallic spheres as point charges?
What is the assumption made when considering the charged metallic spheres as point charges?
What device did Coulomb invent to measure the quantity of a force?
What device did Coulomb invent to measure the quantity of a force?
What did Cavendish use the torsion balance to measure later?
What did Cavendish use the torsion balance to measure later?
What was the purpose of Coulomb's process of putting a charged sphere in contact with an identical uncharged sphere?
What was the purpose of Coulomb's process of putting a charged sphere in contact with an identical uncharged sphere?
What is the significance of the symmetry in the distribution of charge when a charged sphere is put in contact with an identical uncharged sphere?
What is the significance of the symmetry in the distribution of charge when a charged sphere is put in contact with an identical uncharged sphere?
What is the advantage of using a torsion balance in Coulomb's experiment?
What is the advantage of using a torsion balance in Coulomb's experiment?
What is the result of varying the distance for a fixed pair of charges and measuring the force for different separations?
What is the result of varying the distance for a fixed pair of charges and measuring the force for different separations?
What is the range of distances over which Coulomb's law has been established?
What is the range of distances over which Coulomb's law has been established?
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