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Which of the following metals is used to make electrical wires?

Which of the following metals is used to make electrical wires? Correct Answer Copper

The correct answer is Copper.

Key Points

  • Copper has been used in electrical wiring since the invention of the electromagnet and the telegraph in the early 1800s.
  • Copper electrical connectors are still used in telecommunications, as well as power generation, distribution, and transmission.
  • The lower the level of resistivity, the more electrical conductivity a metal has.
    • Copper has low resistivity and therefore is an excellent conductor.
  • Copper is less oxidative than other metals, this is another reason.

 

Important Points

  • The electrical resistivity of particular conductor material is a measure of how strongly the material opposes the flow of electric current through it.
METAL RESISTIVITY (ohm meter) CONDUCTIVITY (Siemens/m)
Copper 1.72 x 10-8 5.96×107
Silver 1.59×10−8 6.30×107
Lead 2.20×10−7 4.55×106

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