coulomb's law

Question

Electrostatic force between two point charges q1, q2 distance r apart is proportional to:

RankGuru · Accepted Answer

Coulomb's Law describes the fundamental force between stationary electric charges.
- The magnitude of the force ($F$) is directly proportional to the product of the magnitudes of the charges ($q_1 q_2$).
- It is inversely proportional to the square of the distance ($r$) between them.
$F = k \frac{q_1 q_2}{r^2}$
where $k$ is Coulomb's constant ($k = \frac{1}{4\pi \epsilon_0} \approx 9 	imes 10^9 	ext{ Nm}^2/	ext{C}^2$).

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