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Across 3. devices that use an electromagnet to measure electric current 8. group of atoms with aligned magnetic poles 12. the generation of a current by a changing magnetic field 13. is a device that increases or decreases the voltage of an alternating current.

Down 1. are where the magnetic force exerted by the magnet is strongest 2. properties & interactions of magnets 4. reverses the direction of the current in a regular pattern 5. is a temporary magnet made by wrapping a wire coil carrying a current around an iron core 6. device that changes electrical energy into mechanical energy 7. exerts a force on other magnets & objects made of magnetic and weaker far away 9. flows only in one direction through a wire 10. electromagnetic induction to transform mechanical energy into electrical energy 11. a single wire wrapped into a cylindrical wire coil 13. large wheel that rotates when pushed by water, wing, or steam