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Insulator and Conductor

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  • What is an insulator?
    An object that DOES NOT allow electricity to flow freely
  • Appliances like microwave ovens, electric kettles and power drills use __________ electricity.
    mains
  • Why are insulators important in an electrical circuit?
    They make the circuit safe to touch
  • Which item on this list does not belong and why? Steel can, rubber tire, copper coin, aluminum wire, gold ring.
    Rubber tire, it is an insulator and everything else is a conductor.
  • Does pure water conduct electricity?
    No
  • What is a conductor?
    An object that allows electricity to flow freely.
  • Why are metal wires covered in a rubber coating?
    Because rubber is an insulator
  • Is glass a conductor of electricity?
    No
  • Would this be a conductor or an insulator? Why?
    Conductor, because it's metal!
  • Which would be the best conductor of electricity? Air, Cork, Water, Silver
    Silver
  • Why is rubber good to use around a wire?
    It is an insulator, it does not allow electricity to pass through it.
  • Which of these materials does not conduct electricity? Iron, Wood, Copper, Silver
    Wood
  • If mains electricity flows through your body, you will get an ________________.
    electric shock
  • Objects made of ____________ are used as conductors.
    metal
  • A unit to measure the strength of electricity.
    Volt
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