Capacitors

Characteristics (2)

  • When d.c. is applied to a capacitor there is an initial surge of current as the capacitor charges and then, when charged, no further current flows
  • In a practical capacitor there will be some current through the dielectric.  This is known as the leakage current
  • A capacitor will block d.c. but allows a.c. to flow
  • A capacitor can store an electric charge