Coulomb's law gives the electrostatic force between two point charges …

Question

Coulomb's law gives the electrostatic force between two point charges as:

Accepted Answer

B. F = k q₁ q₂ / r²

1. F = k q₁ q₂ / r², where k = 1 / (4πε₀) ≈ 9 × 10⁹ N m² C⁻².
2. Inverse square in r, same as Newtonian gravity.
3. Force is along the line joining the charges; repulsive for like signs.
_Source: syllabus Physics Ch 1 §1.5 Coulomb's Law_

Answer

F = k q₁ q₂ / r

Answer

F = k (q₁ + q₂) / r²

Answer

F = k q₁ q₂ r²

Coulomb's law gives the electrostatic force between two point charges as:

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