Chapter 20 Extra Credit Crossword

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Across
  1. 3. creating a potential difference in a conductor using magnetics
  2. 6. voltage is higher in the 2nd coil in step ____ transformers
  3. 9. machine that changes magnetic flux by changing magnetic field strength
  4. 10. transformers work by changing the cross-sectional ___ of a coil
  5. 11. voltage is lower in the 2nd coil in step ___ transformers
  6. 12. metal detectors work via induction by changing B
  7. 15. magnetic ___ is the amount of B passing through an area of a loop or coil of wire
  8. 16. another name for emf
  9. 17. the AC that is generated when the string of a guitar is plucked has the same frequency as the vibration rate of the string
  10. 18. Faraday's law of ____ is E= wNBAsintheta
  11. 21. the __ coil in a car uses step up transformers
Down
  1. 1. creating an EMF or generating current using magnetism
  2. 2. a change in flux is achieved in standing bar circuits by changing the ___ of the magnetic field through the loop
  3. 4. n stands for the ___ of turns per wire
  4. 5. came up with the equation EMF = -ndelta theta/delta time
  5. 7. converts electrical energy to mechanical energy
  6. 8. a ___ changes the voltage of power supplied by a generator
  7. 13. electro motive force
  8. 14. ____'s law states that current flows in the opposite direction as the magnetic field that opposed the change in flux
  9. 19. the magnetic field of an induced current flows in direction that ___ the change in flux that produced it
  10. 20. induction takes place in the __ of a guitar