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# Capacitance

Capacitance is the ratio of the change in an electric charge in a system to the corresponding change in its electric potential. 

58 relations: Admittance, Ampère's circuital law, Capacitive displacement sensor, Capacitor, Capacity of a set, Coefficients of potential, Coulomb, Crosstalk, Dielectric, Displacement current, Earth, Elastance, Electric charge, Electric current, Electric potential, Electrical impedance, Electrical resistance and conductance, Electrical resonance, Electromagnetic coil, Elliptic integral, Energy, Euler–Mascheroni constant, Farad, Femto-, Gauss's law, Gaussian units, Hermann von Helmholtz, High frequency, Hydraulic analogy, Inductor, Integral, International System of Units, Invertible matrix, Joule, Laplace's equation, LCR meter, Letter and digit code, Michael Faraday, Micro-, Mutual capacitance, Nano-, Nanowire, Orders of magnitude (capacitance), Parasitic capacitance, Parasitic oscillation, Permittivity, Pico-, Quantum capacitance, Quantum dot, Relative permittivity, ... Expand index (8 more) »

## Admittance

In electrical engineering, admittance is a measure of how easily a circuit or device will allow a current to flow.

## Ampère's circuital law

In classical electromagnetism, Ampère's circuital law (not to be confused with Ampère's force law that André-Marie Ampère discovered in 1823) relates the integrated magnetic field around a closed loop to the electric current passing through the loop.

## Capacitive displacement sensor

Capacitive displacement sensors “are non-contact devices capable of high-resolution measurement of the position and/or change of position of any conductive target”.

## Capacitor

A capacitor is a passive two-terminal electrical component that stores potential energy in an electric field.

## Capacity of a set

In mathematics, the capacity of a set in Euclidean space is a measure of that set's "size".

## Coefficients of potential

In electrostatics, the coefficients of potential determine the relationship between the charge and electrostatic potential (electrical potential), which is purely geometric: \begin \phi_1.

## Coulomb

The coulomb (symbol: C) is the International System of Units (SI) unit of electric charge.

## Crosstalk

In electronics, crosstalk is any phenomenon by which a signal transmitted on one circuit or channel of a transmission system creates an undesired effect in another circuit or channel.

## Dielectric

A dielectric (or dielectric material) is an electrical insulator that can be polarized by an applied electric field.

## Displacement current

In electromagnetism, displacement current density is the quantity appearing in Maxwell's equations that is defined in terms of the rate of change of, the electric displacement field.

## Earth

Earth is the third planet from the Sun and the only astronomical object known to harbor life.

## Elastance

Electrical elastance is the inverse of capacitance.

## Electric charge

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field.

## Electric current

An electric current is a flow of electric charge.

## Electric potential

An electric potential (also called the electric field potential, potential drop or the electrostatic potential) is the amount of work needed to move a unit positive charge from a reference point to a specific point inside the field without producing any acceleration.

## Electrical impedance

Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.

## Electrical resistance and conductance

The electrical resistance of an electrical conductor is a measure of the difficulty to pass an electric current through that conductor.

## Electrical resonance

Electrical resonance occurs in an electric circuit at a particular resonant frequency when the imaginary parts of impedances or admittances of circuit elements cancel each other.

## Electromagnetic coil

An electromagnetic coil is an electrical conductor such as a wire in the shape of a coil, spiral or helix.

## Elliptic integral

In integral calculus, elliptic integrals originally arose in connection with the problem of giving the arc length of an ellipse.

## Energy

In physics, energy is the quantitative property that must be transferred to an object in order to perform work on, or to heat, the object.

## Euler–Mascheroni constant

The Euler–Mascheroni constant (also called Euler's constant) is a mathematical constant recurring in analysis and number theory, usually denoted by the lowercase Greek letter gamma.

## Farad

The farad (symbol: F) is the SI derived unit of electrical capacitance, the ability of a body to store an electrical charge.

## Femto-

Femto- (symbol f) is a unit prefix in the metric system denoting a factor of 10−15 or.

## Gauss's law

In physics, Gauss's law, also known as Gauss's flux theorem, is a law relating the distribution of electric charge to the resulting electric field.

## Gaussian units

Gaussian units constitute a metric system of physical units.

## Hermann von Helmholtz

Hermann Ludwig Ferdinand von Helmholtz (August 31, 1821 – September 8, 1894) was a German physician and physicist who made significant contributions in several scientific fields.

## High frequency

High frequency (HF) is the ITU designation for the range of radio frequency electromagnetic waves (radio waves) between 3 and 30 megahertz (MHz).

## Hydraulic analogy

The electronic&ndash;hydraulic analogy (derisively referred to as the drain-pipe theory by Oliver Lodge) is the most widely used analogy for "electron fluid" in a metal conductor.

## Inductor

An inductor, also called a coil, choke or reactor, is a passive two-terminal electrical component that stores energy in a magnetic field when electric current flows through it.

## Integral

In mathematics, an integral assigns numbers to functions in a way that can describe displacement, area, volume, and other concepts that arise by combining infinitesimal data.

## International System of Units

The International System of Units (SI, abbreviated from the French Système international (d'unités)) is the modern form of the metric system, and is the most widely used system of measurement.

## Invertible matrix

In linear algebra, an n-by-n square matrix A is called invertible (also nonsingular or nondegenerate) if there exists an n-by-n square matrix B such that where In denotes the n-by-n identity matrix and the multiplication used is ordinary matrix multiplication.

## Joule

The joule (symbol: J) is a derived unit of energy in the International System of Units.

## Laplace's equation

In mathematics, Laplace's equation is a second-order partial differential equation named after Pierre-Simon Laplace who first studied its properties.

## LCR meter

An LCR meter is a type of electronic test equipment used to measure the inductance (L), capacitance (C), and resistance (R) of an electronic component.

## Letter and digit code

The letter and digit code for resistance and capacitance values and tolerances, which is also known as RKM code or "R notation", is a notation to specify resistor and capacitor values defined in the international standard IEC 60062 (formerly IEC 62) since 1952.

## Michael Faraday

Michael Faraday FRS (22 September 1791 – 25 August 1867) was an English scientist who contributed to the study of electromagnetism and electrochemistry.

## Micro-

Micro- (symbol µ) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth).

## Mutual capacitance

Mutual capacitance is intentional or unintentional capacitance that occurs between two charge-holding objects or conductors, in which the current passing through one passes over into the other.

## Nano-

Nano- (symbol n) is a unit prefix meaning "one billionth".

## Nanowire

A nanowire is a nanostructure, with the diameter of the order of a nanometer (10−9 meters).

## Orders of magnitude (capacitance)

This page lists examples of capacitance.

## Parasitic capacitance

Parasitic capacitance, or stray capacitance is an unavoidable and usually unwanted capacitance that exists between the parts of an electronic component or circuit simply because of their proximity to each other.

## Parasitic oscillation

Parasitic oscillation is an undesirable electronic oscillation (cyclic variation in output voltage or current) in an electronic or digital device.

## Permittivity

In electromagnetism, absolute permittivity, often simply called permittivity, usually denoted by the Greek letter ε (epsilon), is the measure of resistance that is encountered when forming an electric field in a particular medium.

## Pico-

Pico- (symbol p) is a unit prefix in the metric system denoting one trillionth, a factor of 10−12.

## Quantum capacitance

Quantum capacitance, also called chemical capacitance and electrochemical capacitance is a quantity first introduced by Serge Luryi (1988).

## Quantum dot

Quantum dots (QD) are very small semiconductor particles, only several nanometres in size, so small that their optical and electronic properties differ from those of larger particles.

## Relative permittivity

The relative permittivity of a material is its (absolute) permittivity expressed as a ratio relative to the permittivity of vacuum.

## Resistor

A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.

## Schwarz–Christoffel mapping

In complex analysis, a Schwarz–Christoffel mapping is a conformal transformation of the upper half-plane onto the interior of a simple polygon.

## Supercapacitor

A supercapacitor (SC) (also called a supercap, ultracapacitor or Goldcap) is a high-capacity capacitor with capacitance values much higher than other capacitors (but lower voltage limits) that bridge the gap between electrolytic capacitors and rechargeable batteries.

## Vacuum permittivity

The physical constant (pronounced as "epsilon nought"), commonly called the vacuum permittivity, permittivity of free space or electric constant, is an ideal, (baseline) physical constant, which is the value of the absolute dielectric permittivity of classical vacuum.

## Van de Graaff generator

A Van de Graaff generator is an electrostatic generator which uses a moving belt to accumulate electric charge on a hollow metal globe on the top of an insulated column, creating very high electric potentials.

## Volt

The volt (symbol: V) is the derived unit for electric potential, electric potential difference (voltage), and electromotive force.

## Voltage

Voltage, electric potential difference, electric pressure or electric tension (formally denoted or, but more often simply as V or U, for instance in the context of Ohm's or Kirchhoff's circuit laws) is the difference in electric potential between two points.

## William Thomson, 1st Baron Kelvin

William Thomson, 1st Baron Kelvin, (26 June 1824 – 17 December 1907) was a Scots-Irish mathematical physicist and engineer who was born in Belfast in 1824.

## References

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