Answer:
On the magnitude of the charges, on their separation and on the sign of the charges
Step-by-step explanation:
The magnitude of the electric force between two charges is given by
![F=k(q_1 q_2)/(r^2)](https://img.qammunity.org/2020/formulas/physics/high-school/itwxhnt3zxt9ptmy812nb6j3yub8evq9o1.png)
where
k is the Coulomb's constant
q1, q2 are the magnitudes of the two charges
r is the separation between the charges
From the formula, we see that the magnitude of the force depends on the following factors:
- magnitude of the two charges
- separation between the charges
Moreover, the direction of the force depends on the sign of the two charges. In fact:
- if the two charges have same sign, the force is repulsive
- if the two charges have opposite signs, the force is attractive