Question

Why only iron is used for making electromagnet; not steel,nickel,cobalt

Answer 1

Answer:

Materials that do this are called ferromagnetic, and at room temperature, only iron, nickel, cobalt and gadolinium are ferromagnetic. These are the materials than can become permanent magnets.

Answer 2

Answer:

Materials that do this are called ferromagnetic, and at room temperature, only iron, nickel, cobalt and gadolinium are ferromagnetic. These are the materials than can become permanent magnets.