Research topic:capacitance

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capacitance

The Columbia Encyclopedia, Sixth Edition

capacitance in electricity, capability of a body, system, circuit, or device for storing electric charge. Capacitance is expressed as the ratio of stored charge in coulombs to the impressed potential difference in volts. The resulting unit of capacitance is the farad [for Michael Faraday ]. In an electric circuit the device designed to store charge is called a capacitor . An ideal capacitor, i.e., one having no resistance or inductance, may be spoken of as a capacitance. When an alternating current flows through a capacitor, the capacitor produces a reactance that resists the current (see impedance ). While every element of a circuit has some capacitance, it is a goal of good design to reduce such unwanted or stray capacitance to a minimum.

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The Columbia Encyclopedia, Sixth Edition. Copyright 2008 Columbia University Press

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Related entries from encyclopedias, dictionaries, and thesauruses

capacitance
capacitance (symbol C ) Property of an electrical circuit or component that describes its ability to store charge in its capacitor . Capacitance is measured in farads: one farad is a capacitance needing a charge of 1 coulomb to raise its potential by 1 volt. Most capacitances are small... Read more
capacitance
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...and some of the electricity can be stored. Capacitance is the ratio of the amount of charge on one...between the conductors, or = /. The unit of capacitance is coulombs per volt (C/V), or farads (F). capacitance capacitance capacitance Read more
capacitance
ca·pac·i·tance / kəˈpasitəns / • n. Physics the ability of a system to store an electric charge. ∎  the ratio of the change in an electric charge in a system to the corresponding change in its electric potential. (Symbol: C ) Read more
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