Here's why:
* Like charges repel: The fundamental principle of electromagnetism states that objects with the same type of charge (both positive or both negative) will exert a force that pushes them apart.
* Opposite charges attract: Conversely, objects with opposite charges (one positive and one negative) will attract each other.
Think of it like magnets: two north poles (same charge) will repel each other, while a north pole and a south pole (opposite charges) will attract.
