The formula for the force between two charges is given by Coulomb's Law: F = k * (q1 * q2) / r2, where F is the force, k is the Coulomb's constant, q1 and q2 are the charges, and r is the distance between the two charges.
The force between two charges is inversely proportional to the square of the distance between them. This means that as the distance increases, the force decreases and vice versa.
The direction of the force between two charges depends on the nature of the charges. If the charges are of the same type (both positive or both negative), the force will be repulsive and in the opposite direction. If the charges are of different types (one positive and one negative), the force will be attractive and in the direction of the line connecting the two charges.
If there are multiple charges present, the force between two charges will be affected by the other charges as well. The net force will be the vector sum of all the individual forces between each pair of charges.
Yes, the force between two charges can be zero if the charges are equal in magnitude but opposite in sign. This is known as an electrically neutral system.