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  1. uniform
  2. Capacitance
  3. equation for potential difference
  4. ε
  5. slowly
  6. increase; decrease
  7. Capacitor
  8. J
  9. positive----negative
  10. dielectric
  11. material
  12. Ω
  13. mechanical energy
  14. ohmic materials
  15. Positive charge movement
  16. V
  17. Current
  18. Direct Current (DC) -
  19. Alternating Current (AC) -
  20. potential difference
  21. kilowatt-hours.
  22. Electron volt
  23. R
  24. Electric potential
  25. charge carrier
  26. greater resistance
  27. constant
  28. high---low
  29. connected to a material that conducts
  30. work
  31. A
  32. Parallel Circuit
  33. E
  34. less resistance
  35. Saltwater and perspiration
  36. d
  37. Potentiometer -
  38. point charges
  39. Potential difference
  40. Luigi Galvani
  41. I
  42. volts
  43. higher resistance
  44. PE
  45. Ohms law
  46. Unit = ampere (A or amps), one coulomb per second
  47. energized or charged
  48. volt (V)
  49. Resistors
  50. W/s, not kWh
  51. electric potential energy
  52. no friction or resistance
  53. perpendicular
  54. Drift velocity =
  55. resistance
  56. work done
  57. Electrons
  58. Electric Power -
  59. Unit: Watt (W), one joule per second
  60. electromotive force
  61. Unit = farad (F), which is one coulomb/volt
  62. Electric Current
  63. Unit: ohm (Ω)
  64. Battery
  65. transfer of energy
  66. Series Circuit
  67. εo
  68. zero
  1. a -sum up V
  2. b variable for electrical energy
  3. c Potential difference maintains ____ in a circuit
  4. d -2 or more paths
  5. e Capacitors made with a _____ between the plates hold more charge - this book assumes vacuum between plates
  6. f The negative sign means that the PE will ____ when the charge is negative and ______ when the charge is positive
  7. g Electric potential energy is a form of
  8. h control the amount of current in a conductor
  9. i When discharged, the charges move between the plates until the potential difference is
  10. j is the rate of charge transfer
  11. k Mechanical energy is conserved as long as there is
  12. l is the change in electric potential
  13. m When the plates are charged, the capacitor is said to be
  14. n unit for EMF
  15. o terminals causing potential difference are constantly changing sign, causes charges to just vibrate back and forth rather than flow
  16. p When a charge is moved in a uniform electric field, the change in location relates to a change in
  17. q discovered that animals conduct electricity - frog legs twitched when conducting electrical experiments near the frog
  18. r Whenever a charge is moved by another charge's electric field force,____ is done
  19. s is the potential energy associated with a charge in an electric field
  20. t Longer material =
  21. u A charged capacitor stores
  22. v electrons move in one direction, from low electric potential to high electric potential (remember conventional current is flow of positive charge) - conventional current moves from positive terminal to negative terminal
  23. w Conventional current =
  24. x no change in PE, no
  25. y is the permittivity of the material,
  26. z Unit for potential difference is the
  27. aa a unit of energy, energy 1 electron gains when moved through a potential difference of 1V.
  28. ab variable for volt
  29. ac The plates become charged by connecting them to a source of
  30. ad rate of energy conversion
  31. ae Changing the____ between the plates of a capacitor will change how much charge it can hold
  32. af variable for joule
  33. ag SI unit for electrical energy is
  34. ah unit for capacitance
  35. ai Greater area =
  36. aj variable for ampere
  37. ak Opposition of the motion of charge through a conductor
  38. al device used to store electric potential energy
  39. am Higher temperature =
  40. an Negative charges inside the battery move from the ___ terminal to the ____
  41. ao in the conductor move along a zig-zag due to their vibrations - causes collisions and energy transfer
  42. ap is the permittivity in a vacuum, which is 8.85x10-12 C2/(Nm2)
  43. aq No work is done when a charge is moved _____ to an electric field, and the PEelectric remains constant
  44. ar Work done to move the charge is a measure of the
  45. as Electrons move ____ through a conductor in the opposite direction from the electric field - however E reaches the electrons at nearly c
  46. at Once a capacitor is charged it will remain so until
  47. au point charges are not____ because their field weakens at a distance
  48. av Free electrons in a conductor move from areas of ___ electric potential to areas of ___ electric potential
  49. aw lower the body's resistance
  50. ax unit for electric power
  51. ay variable for ohm
  52. az V = IR
  53. ba variable for current
  54. bb Movement of electric charge
  55. bc EMF
  56. bd unit for resistance
  57. be Ohm's law only applies to materials that have constant resistance - called
  58. bf variable for resistance
  59. bg is the displacement from reference point
  60. bh Power companies measure energy usage in
  61. bi Current motion is actually made up of positive, negative or movement of both - called
  62. bj unit for current
  63. bk is the ratio of the charge to the potential difference of the plates
  64. bl no PE for
  65. bm a type of resistor that allows the user to change the potential difference across a conductor - used on volume control knobs, dimmer light switch, video game controllers
  66. bn net velocity of the charge carriers, very small (~25mm/s)
  67. bo ∆V = ∆PEelectric/q
  68. bp energy storage unit that maintains a constant potential difference between two locations called terminals