• A device that stores energy in electric field.
  • Two conductive plates separated by a non- conductive material.
    • Ability to hold a charge depends on:
    • Conductive plate surface area.
    • Material between plates.
  • Electrons accumulate on one plate forcing electrons away from the other plate leaving a net positive charge.
  • Think of a capacitor as very small, temporary storage battery.
  • A capacitor blocks the passage of DC
  • A capacitor passes AC