Across
- 3. permanent magnets on the outside and a spinning armature on the inside
- 5. a revolving structure in an electric motor or generator
- 7. any device for converting mechanical energy into electrical energy
- 9. A current-carrying coil of wire that acts like a magnet when a current passes through it
- 10. iron, cobalt and nickel
- 11. cannot produce torque near synchronous speed
- 12. 3 jewelled eunich
- 14. magnetic force is perpendicular to this
- 16. something that causes a change in the motion
- 17. 96,494 coulombs per mole
- 18. the act or process by which an electric or magnetic effect is produced
- 19. change in magnetic field
- 22. Either of the two ends of a magnet
- 24. electric fields cant form
- 26. magnetic field strength equal to the intensity of a magnetic field in a vacuum in which a unit magnetic pole experiences a mechanical force of one dyne in the direction of the field
Down
- 1. new oceanic crust is formed by the convective upwelling of magma at mid-ocean ridges
- 2. brown to black mineral that is strongly magnetic
- 4. happen every 4 or 5 million years
- 6. a region within a magnetic material in which the magnetization is in a uniform direction
- 8. established the standard orientation of vector quantities normal to a plane
- 13. to draw by a physical force
- 15. A device consisting of a coil of insulated wire wrapped around an iron core that becomes magnetized when an electric current flows through the wire
- 20. An instrument used to detect, measure, and determine the direction of small electric currents by means of mechanical effects produced by a current-carrying coil in a magnetic field
- 21. an instrument for determining directions
- 23. rich in magnesium and iron
- 25. to force that pushes something away