Understanding Coulomb's Law

Coulomb's Law describes the force between two charged objects:

* F = k * (q1 * q2) / r²

Where:

* F is the force of attraction or repulsion

* k is Coulomb's constant (approximately 9 x 10^9 N⋅m²/C²)

* q1 and q2 are the magnitudes of the charges

* r is the distance between the charges

Doubling the Charge

Let's say the original force is F. If we double the magnitude of each charge (q1 and q2), the force will be:

* F' = k * (2q1 * 2q2) / r²

* F' = 4 * k * (q1 * q2) / r²

* F' = 4F

Conclusion

When you double the magnitude of each charge, the force between them increases by a factor of 4.