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Conductors

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  • What is the difference between a conductor and an insulator?
    A conductor allows electricity or heat to pass through, while an insulator does not.
  • What is the purpose of the metal filaments in a light bulb?
    They conduct electricity and produce light when heated.
  • What would happen if we used wood instead of copper for electrical wiring?
    The electricity would not flow because wood is an insulator.
  • Why does aluminum foil heat up quickly in an oven?
    Because aluminum is a good thermal conductor and transfers heat easily.
  • Why do some metals conduct electricity better than others?
    Because they have more free electrons to carry the electric charge.
  • Why do electricians wear rubber gloves when working?
    Rubber is an insulator and prevents electrical shock.
  • Which material would be best for a wire: rubber, plastic, or copper? Why?
    Copper, because it is a strong electrical conductor.
  • Give one example of a thermal conductor and one example of an electrical conductor.
    Thermal conductor: aluminum. Electrical conductor: copper.
  • Why are frying pans made of metal but have plastic handles?
    Metal conducts heat for cooking, while plastic insulates to protect hands from burning.
  • What happens if you connect a circuit using only insulators?
    The circuit will not work because insulators block the flow of electricity.
  • What happens if you use an insulator instead of a conductor in a circuit?
    The circuit will not work because electricity cannot flow through an insulator.
  • Which of these is the best thermal conductor: wood, iron, or glass?
    Iron, because metals conduct heat well.
  • Why does metal feel colder than wood at the same temperature?
    Metal conducts heat away from your hand faster than wood does.
  • Why is plastic used for phone chargers?
    Plastic insulates the wire to prevent electric shocks.
  • Why do we use metal for electrical wires?
    Metals are good electrical conductors and allow electricity to flow easily.
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