F = k * (q1 * q2) / r²
Where:
* F is the electric force between the two charges
* k is Coulomb's constant (approximately 8.98755 × 10⁹ N⋅m²/C²)
* q1 and q2 are the magnitudes of the two charges
* r is the distance between the centers of the two charges
Key Points:
* Inverse Square Relationship: The electric force is inversely proportional to the square of the distance between the charges. This means that if you double the distance, the force becomes four times weaker.
* Distance and Strength: As the distance between the charges increases, the electric force weakens. This is because the electric field lines spread out over a larger area.
* Magnitude and Direction: The force is attractive if the charges have opposite signs (one positive and one negative) and repulsive if the charges have the same sign (both positive or both negative).
In summary, the electric force is stronger when charges are closer together and weaker when they are farther apart.
