What occurs when two particles possess the same electric charge?

When two particles have the same electric charge, they experience a force that causes them to repel each other. This behavior is rooted in electrostatics, a fundamental aspect of physics. Specifically, the principle of like charges repelling and unlike charges attracting is a cornerstone of how electric forces operate.

In this case, when two positively charged particles or two negatively charged particles come close to each other, they generate an electric field that pushes them apart. This repulsion occurs because the electric fields that surround each particle interact in such a way that they push against one another. This principle is critical to understanding a variety of phenomena in both classical and modern physics, including the structure of atoms and the behavior of charged objects.

Therefore, the correct response reflects the inherent properties of electric charges and their interactions, illustrating an essential principle in the study of contact and non-contact forces.