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  2. Capacitance - Wikipedia

    en.wikipedia.org/wiki/Capacitance

    A common form is a parallel-plate capacitor, which consists of two conductive plates insulated from each other, usually sandwiching a dielectric material. In a parallel plate capacitor, capacitance is very nearly proportional to the surface area of the conductor plates and inversely proportional to the separation distance between the plates.

  3. Capacitor - Wikipedia

    en.wikipedia.org/wiki/Capacitor

    The leads (until bent) are usually in planes parallel to that of the flat body of the capacitor, and extend in the same direction; they are often parallel as manufactured. Small, cheap discoidal ceramic capacitors have existed from the 1930s onward, and remain in widespread use.

  4. Permittivity - Wikipedia

    en.wikipedia.org/wiki/Permittivity

    The formula for capacitance in a parallel plate capacitor is written as C = ε A d {\displaystyle C=\varepsilon \ {\frac {A}{d}}} where A {\displaystyle A} is the area of one plate, d {\displaystyle d} is the distance between the plates, and ε {\displaystyle \varepsilon } is the permittivity of the medium between the two plates.

  5. Differential capacitance - Wikipedia

    en.wikipedia.org/wiki/Differential_capacitance

    Differential capacitance in physics, electronics, and electrochemistry is a measure of the voltage-dependent capacitance of a nonlinear capacitor, such as an electrical double layer or a semiconductor diode. It is defined as the derivative of charge with respect to potential. [1] [2]

  6. Series and parallel circuits - Wikipedia

    en.wikipedia.org/wiki/Series_and_parallel_circuits

    Parallel resistance is illustrated by the circulatory system. Each organ is supplied by an artery that branches off the aorta. The total resistance of this parallel arrangement is expressed by the following equation: 1/R total = 1/R a + 1/R b + ... + 1/R n. R a, R b, and R n are the resistances of the renal, hepatic, and other arteries ...

  7. Electric displacement field - Wikipedia

    en.wikipedia.org/wiki/Electric_displacement_field

    A parallel plate capacitor. Using an imaginary box, it is possible to use Gauss's law to explain the relationship between electric displacement and free charge. Consider an infinite parallel plate capacitor where the space between the plates is empty or contains a neutral, insulating medium. In both cases, the free charges are only on the metal ...

  8. Parallel-plate capacitor - Wikipedia

    en.wikipedia.org/?title=Parallel-plate_capacitor&...

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Parallel-plate_capacitor&oldid=951504890"

  9. Quantum capacitance - Wikipedia

    en.wikipedia.org/wiki/Quantum_capacitance

    Quantum capacitance, [1] also known as chemical capacitance [2] and electrochemical capacitance ¯, [3] was first theoretically introduced by Serge Luryi (1988), [1] and is defined as the variation of electrical charge with respect to the variation of electrochemical potential ¯, i.e., ¯ = ¯. [3]