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capacitance 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/kəˈpasitəns/,
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capacitances, plural;
  1. The ability of a system to store an electric charge

  2. The ratio of the change in an electric charge in a system to the corresponding change in its electric potential

  1. an electrical phenomenon whereby an electric charge is stored
  2. In electromagnetism and electronics, capacitance is the ability of a body to hold an electrical charge. Capacitance is also a measure of the amount of electrical energy stored (or separated) for a given electric potential. A common form of energy storage device is a parallel-plate capacitor. ...
  3. The property of an electric circuit or its element that permits it to store charge, defined as the ratio of stored charge to potential over that element or circuit (Q/V); SI unit: farad (F); An element of an electrical circuit exhibiting capacitance
  4. An electrical effect in AC circuits that results in amperage peaking before voltage.
  5. The amount of charge stored on a specified body or material to raise the potential difference by 1 volt.
  6. That property of a system of conductors and dielectrics which permits the storage of electricity when potential difference exists between the conductors.
  7. The capability to store charge in an electrostatic field. It can be expressed as equal to the charge Q in coulombs that is stored divided by the voltage E in volts that supplied the charge. Capacitance tends to oppose any change in voltage. The unit is farads.
  8. The ability to store electrically separate charges between two conductors having different potentials.
  9. The ability to store electric charge between two conductors separated by a dielectric material. Capacitance is expressed in Farads.
  10. As the measure of electrical storage potential of a capacitor, the unit of capacitance is the farad, but typical values are expressed in microfarads (MFD).
  11. The capacity of an electric nonconductor that permits the storage of energy when opposite surfaces are maintained at a difference of potential. Measured at 1.0 Hz unless other wise stated.
  12. The ability of the nerve membrane to separate and store charge.
  13. is a measure of object's ability to hold an electrical charge. If two metal plates are separated by an insulator, and a voltage is applied across them, a negative electric charge will build up on one plate, and a positive charge will build up on the other. ...
  14. Combining the voltage and phase of the current allows ECIS to break impedance into two parts; resistance and reactance. The reactive part (Xc) in this case is associated with the metal surfaces in the tissue culture medium (the electrolyte). ...
  15. An element (capacitor) in an electrical circuit capable of separating charges and storing electrical energy. In cells, membranes have capacitor properties contributing to the storage of electrochemical energy (ion gradients).
  16. A device to measure capacitance and usually consisting of conducting plates or foils separated by thin layers of dielectric (such as mica) with the plates on opposite sides of the dielectric layers. ...
  17. Measured in farads, it is the opposition to voltage changes in an alternating current circuit, causing voltage to lag behind current; exhibited by two conductors separated by an insulator.
  18. A capacity that can store a charge in a capacitor. The capacitance of a capacitor increases with the larger area of an electrode, the narrower distance between electrodes, and the higher dielectric constant of the insulator between electrodes. ...
  19. The storing of an electrical charge. At high frequencies, capacitance that exists in cables also represents a form of impedance.
  20. How much charge a capacitor can hold. The standard unit of capacitance is the farad. This unit is too large for most electronics applications, so capacitance is usually expressed in fractional units. Common fractional units for radio frequency (and Tesla coil) work are uF, nF, and pF. ...
  21. a measure of the amount of charge which a capacitor can hold. The unit of capacitance is the Farad.
  22. refers to the ability of a device to store energy in the form of an electrostatic field. In its simplest form, a capacitor is a pair of parallel plates spaced apart with a dielectric material between them. Coax cables have a certain capacitance per foot. ...
  23. The ability to store electrical charge between two conductors. Measured in farads (Named after Michael Faraday). A capacitance value of one farad can store one coulomb of charge at one volt. One farad permits one ampere of current when the voltage changes at the rate of one volt per second. ...
  24. The ability of a cable's dielectric or insulation to store electrical energy. The lower the number, the better - see also Dielectric Constant. ...
  25. Capacitance is the ratio of charge to potential. (F)