Which metal alloy is commonly used to manufacture heating elements of electric appliances?

Options

  • A. Nichrome
  • B. Copper
  • C. Silver
  • D. More than one of the above
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

A. Nichrome

Detailed Explanation

Nichrome, an alloy mainly containing nickel and chromium, is commonly used in heating elements because it has relatively high electrical resistance, a high melting point and good resistance to oxidation. When electric current passes through it, electrical energy is converted into heat due to Joule heating. It is used in heaters, toasters and electric irons.