Question

The metals used in electric industry are _______.

• A. Copper
• B. Aluminum
• C. Mica
• D. All of these

Answer 1

Answer: (D)

All of these

• Being malleable, ductile and a good conductor, copper is mainly used in electrical cables, electronics and chemical industries.
  
• Aluminium is an important metal because it combines the strength of metals such as iron, with extreme lightness and also with good conductivity and great malleability.
  
• Due to its excellent dielectric strength, low power loss factor, insulating properties and resistance to high voltage, mica is one of the most indispensable minerals used in electric and electronic industries.