Which statement best defines a closed circuit?

Which statement best defines a closed circuit?

• A. An interrupted or broken circuit, flow stops.
• B. A complete circuit allowing flow, no breaks.
• C. A circuit that uses alternating current.
• D. A device that generates electricity.

Answer: (B)

Closed circuit means there is a complete, unbroken path for current to travel. When the circuit is complete and connected from the source, through any loads, and back to the source, electrons can flow and the devices in the circuit can operate. The statement that best defines this is a complete circuit allowing flow with no breaks, because a continuous path is necessary for current to move. If there’s any gap—like an open switch or a broken wire—the circuit is open and current stops. Mentioning alternating current is about the type of current, not whether the circuit is closed, and a device that generates electricity describes the energy source, not the circuit’s state.

Closed circuit means there is a complete, unbroken path for current to travel. When the circuit is complete and connected from the source, through any loads, and back to the source, electrons can flow and the devices in the circuit can operate. The statement that best defines this is a complete circuit allowing flow with no breaks, because a continuous path is necessary for current to move. If there’s any gap—like an open switch or a broken wire—the circuit is open and current stops. Mentioning alternating current is about the type of current, not whether the circuit is closed, and a device that generates electricity describes the energy source, not the circuit’s state.