Direct current flows in which pattern?

• A. In a single direction
• B. Changes direction periodically
• C. Random direction
• D. Stops and starts

Answer: (A)

Direct current flows in a single direction because the source maintains a fixed polarity, causing charge carriers to drift in one consistent direction through the circuit. In practice, the conventional current is considered to move from the positive terminal toward the negative terminal, while electrons move the opposite way. This unidirectional flow is what sets DC apart from alternating current, where the voltage and current reverse direction periodically. Real DC circuits can have on/off switching or slight ripple, but when current is present, it travels in one direction, not switching back and forth.