Electric current is defined as?

• A. The continuous flow of electric charges through a material
• B. The rate of energy production in a generator
• C. A static charge on a surface
• D. The resistance of a conductor

Answer: (A)

Electric current is defined as the continuous flow of electric charges through a material. It describes how much charge passes a point in a circuit per unit time, measured in amperes (1 ampere = 1 coulomb per second). This concept captures the rate of movement, not the energy produced, not a static charge, and not the material’s resistance. For reference, energy production is power (P = IV), a static charge is stored rather than moving, and resistance is what impedes flow. In circuits we use conventional current as the direction of positive charge flow, even though electrons in a conductor typically move opposite to that direction.