Magnetism

• What are electromagnets?

  Magnets powered by electricity
• How are electromagnets made?

  Coil of wire around an iron core
• Opposite poles _______

  Attract
• Same poles ____

  Repel
• How can you see the field what is around a magnet?

  Using a small compass or iron fillings, if the fillings are closer together the current is stronger
• What is current?

  Current is the amount of charge flowing per second
• What is current measured with?

  An ammeter
• What is the unit for current?

  Amps