Materials and Electrical Conductivity
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Questions and Answers

Which type of material has very low electrical conductivities and are classified as being electrical insulators?

  • Polymers and ceramics (correct)
  • Paramagnetic materials
  • Diamagnetic materials
  • Ferromagnetic materials

    • What are the metals in common use in engineering which have the highest electrical conductivities?

  • Gold, iron, and lead
  • Nickel, zinc, and tin
  • Silver, copper, and aluminum (correct)
  • Platinum, mercury, and titanium

    • What is the unit of electrical conductivity?

  • Ω-1 m-1
  • mho (℧)
  • siemen (S)
  • S/m (correct)

    • What is the reciprocal of the resistance of a material called?

    <p>Electrical conductance G</p> Signup and view all the answers

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