Which theory states that current flows from the most positive point to the most negative point in a circuit?

• A. Conventional current flow
• B. Electron flow
• C. Grounding
• D. Voltage

Answer: (A)

Conventional current flow is the idea that current travels from the most positive point toward the most negative point in a circuit. This convention was adopted before the actual charge carriers were known, and it’s still used because it aligns with how we analyze energy transfer and assign current direction in circuit diagrams and equations. In most circuit analysis, current is treated as moving from the positive terminal of a source, through the load, back to the source’s negative terminal, even though the physical electrons move in the opposite direction. The other concepts don’t specify a direction for current in this way: electron flow describes the real movement of electrons from negative to positive, grounding is about a reference point for potentials, and voltage is the potential difference that drives current but doesn’t declare which way current travels.