What is the physical meaning of capacitance C of a capacitor?

Question

Explain

Answer 1

The capacitor's capacitance (C) is a measure of the amount of charge (Q) stored on each plate for a given potential difference or voltage (V) which appears between the plates:
C=Q/V
In SI units, a capacitor has a capacitance of one farad when one coulomb of charge causes a potential difference of one volt across the plates. Since the farad is a very large unit, values of capacitors are usually expressed in microfarads (µF), nanofarads (nF), or picofarads (pF).
2.(OR) C = "capacitance" = q /DV

Units: coulomb/volt = farad (F)

The capacitance of a capacitor is constant; if q increases, DV
increases proportion-ately.
Most authors omit the D; thus, C = q /V

The capacitance is proportional to the surface area of the conducting plate and inversely proportional to the distance between the plates. It is also proportional to the permittivity of the dielectric (that is, non-conducting) substance that separates the plates.

[Capacitors are an electrical device that can store energy in the electric field between capacitors a pair of closely spaced conductors. When voltage is applied to the capacitors, electric charges of equal magnitude. Capacitors are used in electrical circuits as energy-storage devices. Capacitors can also be used to differentiate between high-low frequency signals and this makes them useful in electronic filters. Capacitors are occasionally referred to as condensers. This is now considered an antiquated term.

Answer 2

Capacitance is the measure of a capacitor's ability to store an electric charge on its plates. The unit of measurement is farad; this is the ability of a capacitor to store one Coulomb of electrons (coulomb being 6.25*10^18 electrons) under one volt of potential difference. So C = Q/V where C is capacitance, Q is the quantity of charge in electrons and V is voltage (potential difference between the plates).

Hope this helps.

Answer 3

It is a capacitor. A motor requires two (or more) phases of electricity to operate, and the capacitor provides a phase shift to one of the two windings of the motor. (The other winding is unshifted.) The capacitance of the device is 3 microfarads. The rest of the ratings are 250 volts maximum, 70 Celsius maximum temperature, and 50/60 Hz operating frequency.

Answer 4

A capacitor is basically two metal plates with a space between them. If you apply a potential difference to the plates, a charge builds up on the plates. Capacitance is basically a measure that tells you how the charge on the plates and voltage applied to the plates are related to each other.

Capacitance = charge on plates / potential difference between plates

If there is just air between the plates, they have the same surface area, and they are parallel, capacitance can be found using the formula

Capacitance = the permittivity of free space * (surface area of one plate/distance between the plates)

Answer 5

Capacitance Meaning

Answer 6

It is the number of coulombs of charge stored per volt of field strength.

C = Q/V

HTH ☺


Doug