Which object does not allow electricity to pass through it?

Which object does not allow electricity to pass through it?

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

Answer: (C)

Think about materials in terms of how they handle electric current: some let it flow, others block it. An electrical insulator is designed to resist the flow of current, so electricity does not pass through it. That’s why it’s the correct choice for something that does not allow electricity to pass. The others are built to carry or house electricity—the conductor and a signal feeder serve as pathways for current, and cable trunking is simply a protective channel for cables, not a barrier that blocks current by design.

Think about materials in terms of how they handle electric current: some let it flow, others block it. An electrical insulator is designed to resist the flow of current, so electricity does not pass through it. That’s why it’s the correct choice for something that does not allow electricity to pass. The others are built to carry or house electricity—the conductor and a signal feeder serve as pathways for current, and cable trunking is simply a protective channel for cables, not a barrier that blocks current by design.