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Across 4. This device changes voltage for DC. 5. The direction that magnetic field lines point. 6. The 'A' in AC. 7. A changing magnetic field creates a current near a conductor. What is this called? 8. Find the force on a wire in a magnetic field using the _________ hand rule. 12. Unit of Current. 13. This Device changes voltage but only for AC. 14. Contains many cells. 17. Use this to measure current. 18. Unit of electrical charge. 19. Useful for protecting devices against too much current.

Down 1. Another name for a Solenoid. 2. This changes motion into electricity into motion. 3. Another name for potential difference. 5. A good material for a permanent magnet. 9. A device that shows you the direction of a magnetic field. 10. Opposite of conductor. 11. You can increase the magnetic field in a coil using a soft iron ______. 15. A Solenoid has many ________ of wire. 16. A type of switch that uses electro-magnetism