Which switch allows current to flow only when it's in the closed (on) position?

Which switch allows current to flow only when it's in the closed (on) position?

• A. Push Switch
• B. Push-to-Break Switch
• C. Two-Way Switch
• D. On-Off Switch

Answer: (D)

Switches determine whether a circuit is complete. Current flows only when the circuit is closed. An On-Off switch is built to have a clearly defined closed (on) position where the circuit is complete and current can flow, and an open (off) position where the circuit is broken and current stops. A Push-to-Break switch is normally closed and opens the circuit when pressed, so it would stop current when you press it. A Push switch is usually a momentary contact that may close the circuit only while pressed, not a steady on position. A Two-Way switch simply routes current between two paths and isn’t the simple on/off control described. So the On-Off switch best fits the idea of current flowing only when it’s in the closed position.

Switches determine whether a circuit is complete. Current flows only when the circuit is closed. An On-Off switch is built to have a clearly defined closed (on) position where the circuit is complete and current can flow, and an open (off) position where the circuit is broken and current stops. A Push-to-Break switch is normally closed and opens the circuit when pressed, so it would stop current when you press it. A Push switch is usually a momentary contact that may close the circuit only while pressed, not a steady on position. A Two-Way switch simply routes current between two paths and isn’t the simple on/off control described. So the On-Off switch best fits the idea of current flowing only when it’s in the closed position.