Electromagnets

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Across
  1. 2. The name given to the material inside an electromagnet
  2. 7. The wire wrapped around an iron core to make an electromagnet
  3. 9. Makes a noise using an electromagnet
  4. 10. A magnet that can be turned on or off with an electric current
  5. 11. It can pick up iron & steel
  6. 13. A region around a magnet
  7. 14. Unlike poles do this
  8. 16. Increase this increases the strength of an electromagnet
  9. 17. A substance that magnetises easily
  10. 18. Repels the N-pole of a magnet or electromagnet
  11. 19. A magnet used to show direction
Down
  1. 1. Direction of field lines around a straight current-carrying wire, when the direction of the current is into the page.
  2. 3. A coil carrying electric current
  3. 4. Found inside an electric bell and a relay switch.
  4. 5. Part of a magnet that can be N or S
  5. 6. Unit of electric current
  6. 8. Symbol found inside a circle, to represent direction coming out of the page
  7. 12. Pole you will be facing if holding an electromagnet and the current flows clockwise
  8. 15. Decrease the number of these will decrease the strength of an electromagnet