In which direction does current flow within the internal portion of a battery?

In the internal portion of a battery, the current flows from the anode to the cathode. This flow occurs due to the electrochemical reactions taking place within the battery. During discharge, the anode undergoes oxidation, releasing electrons and creating positive ions. These electrons then move externally through the circuit to the cathode while the positive ions travel through the electrolyte toward the cathode.

This movement effectively establishes a current flow in the internal circuit from the anode, where the oxidation reaction takes place, to the cathode, where reduction occurs. Understanding this internal flow of current is crucial for grasping how batteries function and how they generate electric power. Thus, the selection of current flowing from anode to cathode accurately reflects the underlying chemical processes and principles governing battery operation.