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Across 2. Another name for potential difference. 3. The 'A' in AC. 4. Unit of Current. 10. A changing magnetic field creates a current near a conductor. What is this called? 12. Use this to measure current. 13. Contains many cells. 15. The direction that magnetic field lines point. 18. A Solenoid has many ________ of wire. 19. This changes motion into electricity.

Down 1. A type of switch that uses electro-magnetism 2. This device changes voltage for DC. 5. Unit of electrical charge. 6. A device that shows you the direction of a magnetic field. 7. Opposite of conductor. 8. Another name for a Solenoid. 9. Find the force on a wire in a magnetic field using the _________ hand rule. 11. This Device changes voltage but only for AC. 14. A good material for a permanent magnet. 16. You can increase the magnetic field in a coil using a soft iron ______. 17. Useful for protecting devices against too much current.