Reference Terms
from Wikipedia, the free encyclopedia


A capacitor is an electrical device that can store energy in the electric field between a pair of closely spaced conductors (called 'plates').

When voltage is applied to the capacitor, electric charges of equal magnitude, but opposite polarity, build up on each plate.

Capacitors are used in electrical circuits as energy-storage devices.

They can also be used to differentiate between high-frequency and low-frequency signals and this makes them useful in electronic filters.

Note:   The above text is excerpted from the Wikipedia article "Capacitor", which has been released under the GNU Free Documentation License.
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Matter & Energy News
November 29, 2015

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