Here's why:
* Coulomb's Law: The force between two charges is directly proportional to the product of the charges. This means if one charge doubles, the product of the charges also doubles, leading to a doubling of the force.
Formula:
F = k * (q1 * q2) / r²
Where:
* F is the electrostatic force
* k is Coulomb's constant
* q1 and q2 are the magnitudes of the charges
* r is the distance between the charges
Example:
If you have two charges, q1 and q2, and you double q1, the new force will be:
F' = k * (2q1 * q2) / r² = 2 * (k * q1 * q2 / r²) = 2F
Therefore, doubling one charge results in a doubling of the electrostatic force between the charges.