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What are conductors and insulators? | Year 4 Science PDF Download

Conductors

  • Some materials allow electricity to pass through them easily, and these are called electrical conductors.
  • Many metals, including copper, iron, and steel, are excellent electrical conductors. This is why the parts of electrical devices that need to conduct electricity are made of metal.
  • Metal is used in plugs to enable electricity to transfer from the wall socket, through the plug, and into a device like a radio or TV.
  • In a light bulb, the metal filament conducts electricity, which causes the bulb to light up.

What are conductors and insulators? | Year 4 Science

Insulators

  • Some materials do not permit electricity to pass through them and are known as electrical insulators.
  • Plastic, wood, glass, and rubber are effective electrical insulators, which is why they are used to cover materials that conduct electricity.
  • The plastic coating around wires is an electrical insulator, preventing you from receiving an electrical shock.

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Which of the following materials is an excellent electrical insulator?
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