Electromagnet Definition
An electromagnet is made by passing electricity through a wire coil, creating a magnetic field. Electromagnets are magnets that can be turned on and off.
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Electric & Magnetic Fields
Fun Facts
- Iron cores make electromagnets stronger than those without cores.
- Electromagnets can create magnetic fields that attract metal.
- Increasing coil turns in an electromagnet strengthens its magnetic field.
Why Do We Need To Know About Electromagnet
Learning about electromagnets helps you understand how things like your phone and computer speakers work. These speakers use electromagnets to make sound. Electromagnets are also important in making laser printers work. They use a special drum to pull in toner powder to print on paper.
This shows us how electromagnets are used in many areas, including entertainment and technology. Knowing about electromagnets is useful, especially if you’re interested in engineering, working with sound, or making things print.
Frequently Asked Questions
Check out the Full Lesson on Electric & Magnetic Fields
In this lesson, we learn that:
- Forces acting at a distance can be explained by electric & magnetic fields.
- Forces from electric and magnetic fields can be either attractive or repulsive.
- The strength of the force depends on factors like distance or the amount of charge.
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