Coulomb law

Coulomb law:-(introduction):- This law was proposed by charles A coulomb in 1874.                                                                         Definition :-the force of attraction or repulsion blw two point stationary charges is directly propertional  to the product of the charges and inversly propertional to the square of the distance between them.
Mathematically:-Formula
F = k \frac{q_1q_2}{r^2}
F=electric force
k=Coulomb constant
q_1, q_2=charges
r=distance of separation
Here, ke or K is the Coulomb constant (ke ≈ 8.988×109 N⋅m2⋅C−2),[1] q1 and q2 are the signed magnitudes of the charges, and the scalar r is the distance between the charges.                                                   The force is along the straight line joining the two charges. If the charges have the same sign, the electrostatic force between them is repulsive; if they have differenThe force is along the straight line joining the two charges. If the charges have the same sign, the electrostatic force between them is repulsive; if they have opposite signs, the force between them is attractive.Be it signs, the force between them is attractive

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