Here's why:
* Electric current is the flow of electric charge.
* Electrons are negatively charged particles found orbiting the nucleus of an atom.
* In most materials used for electrical conduction (like metals), electrons are loosely bound to their atoms and can easily move.
* When a voltage is applied across a conductor, it creates an electric field that pushes these free electrons in a specific direction, creating a flow of charge, which is what we call electric current.
Important Note: While electrons are the primary charge carriers in most conductors, there are some cases where other charged particles can contribute to current flow. For instance, in electrolytes, ions (charged atoms or molecules) carry the current.