Final answer:
Particles with opposite charges attract each other according to the principle of electrostatics and Coulomb's law.
Step-by-step explanation:
Two particles that have opposite charges will attract each other. This is a fundamental principle in physics, specifically in the study of electrostatics. Coulomb's law also supports this observation by stating that particles with unlike charges exert a force of attraction between them. Conversely, particles with like charges repel each other. In the case of charged particles, the force of attraction or repulsion between them does not neutralize or cancel out; instead, it defines how they interact with one another.