The nature of the force between two entities depends on the characteristics of the objects involved. Currents flowing in the same direction result in an attractive force, while currents in opposite directions cause a repulsive force. Like charges repel and unlike charges attract each other due to the Coulomb force.
The force between two objects or entities can be either attractive or repulsive depending on the nature of the objects and the forces involved. When discussing currents within conductors, the force is attractive if the currents are in the same direction and repulsive if they are in opposite directions. In electrostatics, when dealing with charges, like charges repel each other, making the force repulsive, and unlike charges attract each other, resulting in an attractive force. This principle is exemplified in common static electricity situations.
For instance, two positively charged metal balls placed at a distance will exert a repulsive force on each other due to their like charges. On the other hand, if one of the balls had a negative charge, the force between them would be attractive. The Coulomb force, which dictates the interactions between electric charges, can be either attractive or repulsive, unlike the gravitational force, which is always attractive.