" 9.Define one coulomb charge."

(Attempt any ten of the following questions) Define one coulomb charge. Two point charges at a distance r in air exert a force F on each other. At what distance will these charges experience the same force F in a medium of dielectric constant k?

State and explain Coulomb's law of force in electrostatics. What are its limitations? Define one coulomb of charge using this law.

Define 1 coulomb of charge .

State and explain Coulomb's law of force in electrostatic. What is the SI unit of charge and hence define one coulomb of charge using this law?

Define 1 Coulomb.