Law of Coulomb (electrostatic)
See also: Law of Coulomb
In electrostatic, the law of Coulomb expresses the electric force exerted by a electric Charge placed in a point on a load placed in a point . This law is expressed in vectorial form by the following formula:
- ε 0=8,854·10-12 F·m-1 is a universal constant called electric permittivity of the vacuum, and
- is the Vecteur position which connects the first body to the second.
In the system of units C.G.S. the law is written more simply
with the lengths this time expressed in centimetres (cm) and them loads in electrostatic unit (esu).
NB: the law is not valid for loads moving but only in one reference frame where they are fixed.
- Law of electric Coulomb
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