Multiple choice

Which of the following metals is not used as an electromagnet?

  1. Iron

  2. Copper

  3. Nickel

  4. Cobalt

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Electromagnets require ferromagnetic materials to concentrate magnetic flux. Iron, nickel, and cobalt are ferromagnetic, whereas copper is a non-magnetic metal and cannot be used to create an electromagnet.