What is Coulomb force: Definition and 44 Discussions

Coulomb's law, or Coulomb's inverse-square law, is an experimental law of physics that quantifies the amount of force between two stationary, electrically charged particles. The electric force between charged bodies at rest is conventionally called electrostatic force or Coulomb force. The law was first discovered in 1785 by French physicist Charles-Augustin de Coulomb, hence the name. Coulomb's law was essential to the development of the theory of electromagnetism, maybe even its starting point, as it made it possible to discuss the quantity of electric charge in a meaningful way.The law states that the magnitude of the electrostatic force of attraction or repulsion between two point charges is directly proportional to the product of the magnitudes of charges and inversely proportional to the square of the distance between them,

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{\displaystyle |F|=k_{\text{e}}{\frac {|q_{1}q_{2}|}{r^{2}}}}
Here, ke is Coulomb's constant (ke ≈ 8.988×109 N⋅m2⋅C−2), q1 and q2 are the signed magnitudes of the charges, and the scalar r is the distance between the charges.
The force is along the straight line joining the two charges. If the charges have the same sign, the electrostatic force between them is repulsive; if they have different signs, the force between them is attractive.
Being an inverse-square law, the law is analogous to Isaac Newton's inverse-square law of universal gravitation, but gravitational forces are always attractive, while electrostatic forces can be attractive or repulsive. Coulomb's law can be used to derive Gauss's law, and vice versa. In the case of a single stationary point charge, the two laws are equivalent, expressing the same physical law in different ways. The law has been tested extensively, and observations have upheld the law on the scale from 10−16 m to 108 m.

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2. What minimum speed do we need to give a charged ball?

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3. I Separation energy of nucleons and Coulomb barrier

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4. Coulomb's Law Application: A charge repelling a mass on a frictionless incline

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6. Modelling an interation between two protons

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7. Question on Calculating Coulomb force in VECTOR FORM

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8. B Coulomb Force: Is my understanding correct?

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11. Net force acting on a charged particle ##+Q##

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12. How Do You Calculate the Electric Charge on a Suspended Cork Ball?

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13. B Is the Coulomb Force Limited by the Pauli Exclusion Principle in Hydrogen Atoms?

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14. Calculating total Coulomb force vector ?

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15. Coulomb force and charge equilibrium on the xy-plane

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16. K

Paradox - different results for different viewers

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17. Coulomb's force - magnitude of the electric force

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18. What propagates changes of Coulomb force?

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19. Natural frequency of 3 coulomb force bound particles in EF

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20. Kinetic Energy Gain due to Coulomb Force

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21. Coulomb force and the self electric field

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22. Hooke's law and the Coulomb force

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23. Very hard Coulomb Force with two charges

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24. When should I consider the sign of charges when applying Coulomb's Law?

I am studying Physics Vol2 by halliday, resnick and krane. I was attempting the coloumb force exercises..If we put one charge negative and other positive in the formula..then the force comes out to be negative but the instructor manual for the book ignores the negative charge, and take it as...
25. Understanding Coulomb Force in Plasmas

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26. Coulomb force if dielectric is placed in between them

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27. Tedious Algebra- Is it needed? - Coulomb Force

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29. Coulomb Force Point Charges on Cube

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30. Coulomb force vs. Pauli principle in atoms

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31. Deflection Angle in a Repulsive Coulomb Field

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32. The wavelength of the virtual photons of the Coulomb force

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33. How is the Coulomb force transmitted?

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36. Electrostatics, coulomb force between 2 charges

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37. Coulomb force on a line charge

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38. Negative potential energy and coulomb force

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39. Exploring the Mystery of Coulomb Force

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40. Questions on reversed Coulomb force.

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41. R

Questions on reversed Coulomb force.

Questions on reversed "Coulomb" force. I've seen that with Moeller scattering, the attractive force between the nucleus and the electron can become repulsive at high relativistic velocities of the electron. What are the energies required for this to occur? Is there an analogous result between...
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44. Calculating the Coulomb Force between 2 charges in space

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