Across
- 2. motor electric motor driven by an alternating current
- 6. the surface integral of the normal component of the magnetic field B passing through that surface
- 8. to determine the direction of the magnetic force on a positive moving charge, ƒ, point the thumb of the right hand in the direction of v
- 9. rotating coil or coils of a dynamo or electric motor.
- 10. creates energy
- 13. Danish physicist and chemist who discovered that electric currents create magnetic fields
- 14. a region within a magnetic material in which the magnetization is in a uniform direction
- 16. English scientist who contributed to the study of electromagnetism and electrochemistry
- 17. a soft metal core made into a magnet by the passage of electric current through a coil surrounding it
- 21. erpendicular to both the wire and the magnetic field with direction given by the right hand rule.
- 23. region of magnet toward which the lines of magnetic induction converge
- 24. charging and object but not with contact
- 25. igneous rock that is rich in magnesium and iron
Down
- 1. rock mineral and one of the main iron ores
- 3. lines form with magnetic fields
- 4. instrument for detecting and measuring small electric currents
- 5. to back away
- 7. having a high susceptibility to magnetization
- 11. Chinese mariner, explorer, diplomat and fleet admiral
- 12. the formation of new areas of oceanic crust
- 14. change in a planet's magnetic field such that the positions of magnetic north and magnetic south are interchanged
- 15. motor any of a class of rotary electrical machines that converts direct current electrical energy into mechanical energy
- 18. metal instrument used for navigation
- 19. interaction that, when unopposed, will change the motion of an object
- 20. cylindrical coil of wire acting as a magnet when carrying electric current.
- 22. to come together