2.4. Electrical Properties

Try these first

1. 1.

   What is an electrical insulator?

   Hint

   Think about materials that do not allow electricity to pass through.

2. 2.

   Give one application of plastics in electrical engineering.

   Hint

   Consider where you find electrical wires.

3. 3.

   What property makes plastics suitable for cable sheathing?

   • High conductivity
   • Low conductivity
   • Chemical reactivity

   Hint

   Consider why materials are used to protect electrical circuits.

4. 4.

   True or False: All plastics are excellent electrical insulators.

   • True
   • False

   Hint

   Think about variations in plastic materials.

5. 5.

   Discuss the implications of using a plastic with low dielectric strength in a high voltage application. What potential hazards could arise?

   Hint

   Consider scenarios where electrical systems could fail due to poor material choice.

6. 6.

   Evaluate how the choice of insulating materials influences design and safety in modern electrical engineering projects.

   Hint

   Reflect on the role of safety standards and material properties in engineering.