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Formula Calculator
Coulomb's Law
Leave one field empty — it will be solved automatically.
Force between two charges
F = k|q₁q₂|/r²
Electric field from point charge
E = k|q|/r²
Force at two distances
F(rᵢ) F(r_f)
Force in a dielectric medium
F = k|q₁q₂|/(εᵣ r²)
Force
N
Charge 1
C
Charge 2
C
Distance
m
Enter values to calculate
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