Coulomb's law is applicable on
Correct answer: D. point charge
- A. spherical distribution of charge
- B. line distribution of charge
- C. surface distribution of charge
- D. point charge
Explanation
Coulomb's law describes the electrostatic force between two point charges. It is applicable when the charges can be treated as point charges, meaning they are small in size compared to the distance between them.Incorrect options: (a), (b), and (c) Coulomb's law is not directly applicable to distributions of charges in these configurations, although it can be applied in certain cases through integration techniques. However, Coulomb's law is most directly applicable to point charges.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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