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The job of a capacitor is to store charge onto its plates. The amount of electrical charge that a capacitor can store on its plates is known as its Capacitance value and depends upon three main factors.

  • The surface area, A of the two conductive plates which make up the capacitor, the larger the area the greater the capacitance.
  • The distance, d between the two plates, the smaller the distance the greater the capacitance.
  • The type of material which separates the two plates called the "dielectric", the higher the permittivity of the dielectric the greater the capacitance.
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