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Conductors & Insulators

Conductors & Insulators. How do these words relate to conductors and insulators?. Protection Aluminum Plastic Copper Slow flow of electrons Glass Metals Transfer electric charge Lamp cord. What is a conductor?.

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Conductors & Insulators

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  1. Conductors & Insulators

  2. How do these words relate to conductors and insulators? • Protection • Aluminum • Plastic • Copper • Slow flow of electrons • Glass • Metals • Transfer electric charge • Lamp cord

  3. What is a conductor? • A conductor is a substance that transfers electriccharge and has high electron mobility (many free electrons). • Can you think of a material that is anelectrical conductor?

  4. Conductors • Copper is considered to be a conductor because it “conducts” the electron current or flow of electrons fairly easily. • Most metals are considered to be good conductors of electrical current. • Other materials that are sometimes used as conductors are silver, gold, and aluminum.

  5. What is an insulator? • An insulator is a material that does not transferelectric charge. • Can you think of a material that is an electricalinsulator? • Why are insulators so important?

  6. Insulators • Insulators are materials that have just the opposite effect on the flow of electrons. They do not let electrons flow very easily from one atom to another. • Some common insulator materials are glass, plastic, rubber, air, and wood. • Insulators are used to protect us from the dangerous effects of electricity flowing through conductors. • We need to shield our bodies from the conductors that carry electricity. The rubbery coating on wires is an insulating material that shields us from the conductor inside. Look at any lamp cord and you will see the insulator. If you see the conductor, it is probably time to replace the cord.

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