Which object allows the flow of electricity?

Which object allows the flow of electricity?

• A. Electrical Insulator
• B. Electrical Conductor
• C. Cable Trunking
• D. Signal Feeder

Answer: (B)

Electric current moves most readily through materials that have free charge carriers and low resistance. An electrical conductor provides a path for current because metals have electrons that can move easily when a voltage is applied. That’s why this is the best choice: it is the substance designed to carry current. An electrical insulator, by contrast, resists current and is used to prevent flow to keep things safe. A cable trunking is simply a protective channel that houses wires; it doesn’t itself carry the current. A signal feeder is a type of cable used for signaling or control, and while it may carry current, the essential element that actually allows the flow is the conducting material inside.

Electric current moves most readily through materials that have free charge carriers and low resistance. An electrical conductor provides a path for current because metals have electrons that can move easily when a voltage is applied. That’s why this is the best choice: it is the substance designed to carry current.

An electrical insulator, by contrast, resists current and is used to prevent flow to keep things safe. A cable trunking is simply a protective channel that houses wires; it doesn’t itself carry the current. A signal feeder is a type of cable used for signaling or control, and while it may carry current, the essential element that actually allows the flow is the conducting material inside.