Capacitors are often used as filters.

More Questions from Capacitors

• When a capacitor is charging, current will flow through its dielectric.
• A capacitor stores electric energy in the form of an electric field.
• A capacitor can be fully charged in 4 time constants.
• The opposition to ac from a capacitor is called reluctance.
• Capacitors in parallel have a higher total value than any individual capacitor.
• In a series capacitive circuit the smallest capacitor will have the largest voltage drop across it.
• The impedance of an RC series circuit is (R2 +C2)1/2.
• The true power in an RC series circuit is PR = I2 x R.
• The unit of capacitance is a farad; one farad stores one coulomb of charge or 6.24 x 1018 electrons.
• The phase angle of an RC series circuit is = invtan (XC/R) = invtan (VC/VR).

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