## Coulomb's Law - Definition and Formula

In this post, we will cover

**Coulomb's Law****Definition**and**Coulomb's Law****Formula**that will help you to understand**Coulomb's Law**better.###
**Coulomb's Law** **Definition-**

The mechanical force produced between two magnetic poles is produced to the product of their pole strengths, and inversely proportional to the square of the distance between them.

### Coulomb's Law Formula-

In the SI System, The law is given by-

where F is the force between the poles (in Newtons), m1 and m2 are pole strengths, d is the distance between the poles in meters, μ(r) is the relative permeability of the medium in which the poles are situated, and μ(o) is the permeability of free space (in air).

**μ = Absolute permeability of air (or vacuum) x relative permeability μ(r).**

**Know More About Coulomb's law (Wikipedia)**

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