Coulomb's law | Wikipedia audio article
Channel: Subhajit Sahu
Date: 2018-12-25

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Coulomb%27s_law


00:01:26 1 History
00:05:01 2 The law
00:06:49 2.1 Units
00:07:16 2.2 Electric field
00:07:50 2.3 Coulomb's constant
00:08:09 2.4 Limitations
00:09:37 2.5 Quantum field theory origin
00:09:52 3 Scalar form
00:10:01 4 Vector form
00:11:24 4.1 System of discrete charges
00:13:21 4.2 Continuous charge distribution
00:14:26 5 Simple experiment to verify Coulomb's law
00:26:11 6 Atomic forces
00:27:15 7 See also
00:28:58 8 Notes
00:29:59 9 References
00:30:03 10 External links
00:32:18 r − ri (a vector pointing from charges qi to q).
00:32:25 Continuous charge distribution
00:35:00 Simple experiment to verify Coulomb's law
00:36:38 Atomic forces
00:37:24 See also



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SUMMARY
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Coulomb's law, or Coulomb's inverse-square law, is a law of physics for quantifying the amount of force with which stationary electrically charged particles repel or attract each other. In its scalar form, the law is:

  
    
      
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    {\displaystyle F=k_{e}{\frac {q_{1}q_{2}}{r^{2}}}}
  ,where ke is Coulomb's constant (ke ≈ 9×109 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 of the interaction between the charges is attractive if the charges have opposite signs (i.e., F is negative) and repulsive if like-signed (i.e., F is positive).
The law was first published in 1785 by French physicist Charles-Augustin de Coulomb and was essential to the development of the theory of electromagnetism. Being an inverse-square law, it is analogous to Isaac Newton's inverse-square law of universal gravitation. Coulomb's law can be used to derive Gauss's law, and vice versa. The law has been tested extensively, and all observations have upheld the laws of Newton.