Question

explain coulomb's law

Answer 1

hi friend,

<>in 1785 ,Charles coulomb experimentally established the fundamental law of electric force between two stationary charged particles.

<>he observed that

an electric force has the following properties:

1.it is directed along a line joining the two particles and is inversely proportional to the square of separation distance r,between them

2.it is proportional to the product of the magnitudes of the charges

3.it is attractive if the charges are of opposite sign and repulsive if the charges have the same sign


from these observations ,coulomb proposed the following mathematical form for the electric force between two charges which is called as Coulomb's law

F=k|q1||q2|/r²

<>where k is a constant called the coulomb constant..

→k=8.9875×10^9 Nm²/C²


I hope this will help u ;)

Answer 2

Electrostatic force between the 2 point charges is directly proportional to the product of the magnitude of the 2 charges and inversely proportional to the square of the distance between them 

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for coulomb's force to exist there must be at least 2 charges so that there can be the force of attraction or repulsion between the charges , if there only only one charge there wont be any force acting on it.

coulomb's formula is given by

F = $k_{e}$ q1 q2/ r²

where $k_{e}$  =  8.99×10^9 Nm²/C²