Sagot :
Answer:
In a simple example, an electromagnet can pick up pieces of iron, nickel, and cobalt. Electromagnets can be made stronger by adding more coils to the copper wire, or adding an iron core through the coils (for example a nail).
Answer:
In a simple example, an electromagnet can pick up pieces of iron, nickel, and cobalt. Electromagnets can be made stronger by adding more coils to the copper wire, or adding an iron core through the coils (for example a nail).