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IEVref: | 121-11-02 | ID: | |

Language: | en | Status: Standard | |

Term: | Coulomb law | ||

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Definition: | law giving the force between two charged particles, expressed by the relation $F}_{12}=k\cdot \frac{{Q}_{1}{Q}_{2}}{{r}^{2}}\cdot \frac{{r}_{21}}{r}=k\cdot \frac{{Q}_{1}{Q}_{2}}{{r}^{2}}\cdot {e}_{21$
where NOTE – In vacuum the constant | ||

Publication date: | 1998-08 | ||

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Internal notes: | 2017-06-02: Cleanup - Remove Attached Image 121-11-02.gif | ||

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$F}_{12}=k\cdot \frac{{Q}_{1}{Q}_{2}}{{r}^{2}}\cdot \frac{{r}_{21}}{r}=k\cdot \frac{{Q}_{1}{Q}_{2}}{{r}^{2}}\cdot {e}_{21$

where **F**_{12} is the force exerted on the particle with electric charge *Q*_{1} by the particle with electric charge *Q*_{2} , *k* a positive constant, **r**_{21} the vector from the particle with electric charge *Q*_{2} to the particle with electric charge *Q*_{1}, *r* = |**r**_{21}| the distance between particles and **e**_{21} the unit vector **r**_{21}/*r*
*ε*_{0} where *ε*_{0} is the electric constant.