In electricity, what does current refer to?

Current refers to the flow of electric charge in a circuit. It is measured in amperes (A) and indicates how much electric charge is moving past a specific point in a conductor per unit of time. Essentially, current is a fundamental concept in electricity that describes the movement of electrons and is crucial for the functioning of electrical devices and systems. Understanding current is vital for analyzing circuit behavior and is the key to many practical applications in electricity and electronics.

The other options describe important concepts in electricity, such as potential difference, resistance, and energy storage, but they do not define current itself. Potential difference refers to the voltage that drives the current, resistance describes how much a material opposes current flow, and the storage of electrical energy pertains to components like capacitors or batteries, not the movement of charge.