How can the strength of an electromagnet be controlled?

By changing the number of coils of wire or adjusting the amount of electricity flowing through the wire.

What is the purpose of looping a wire carrying a current around and around many times?

To concentrate the magnetic field.

Iron is a magnetic core that strengthens the magnetic field when the wire is looped around it.

Grade 8th Grade · Science · 40 min· Ngss Ms-ps2-3

I can explain how electromagnets work.

Techquickie · 5:50

Electromagnets - How Do They Work?

7 questions · Multiple choice & Short answer

Quick comprehension check

“Explain how an electromagnet works, including the role of electric current, wire loops, and magnetic cores.”