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Answered 2008-10-25 13:23:29

From the formula, E = V/d, where V is the voltage and d is the distance, it can be seen that the electric field and the distance are inversely related. Thus, as the distance between the parallel plate capacitors is reduced to half, the electric field is increased twice. Moreover, is a dielectric constant k is introduced, the capacitance will increase. This direct relationship can be seen in the formula, C = [k(Єo)A]/d, where k is the dielectric constant. The lowest possible value of k is 1; and that is when the dielectric is a vacuum. Other dielectric constants are greater than 1, such as Teflon which has a dielectric value of 2.1 As the capacitance increases, the electric field also increases. (E = 1/2(CV^2))

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What is the capacitance of a parallel plate capacitor with a dielectric of oil-soaked paper The dielectric constant is 3.8 the distance between the plates is 0.00625 inches and the plate area is 0.25?

3.42*10^-11 farad.

What is the capacitance of capacitor dependent upon?

Capacitance is dependent on the size of the plates, the distance between them, and, to a lessor effect, the dielectric separating them.

What is dielectric constant?

Dielectric constant or relative permittivity of a medium is defined as the ratio of force between two charges separated by a certain distance in air (or vacuum) to the force between the same charges separated by the same distance in the medium. It is denoted by K.

What are the factor affecting capacitances of capacitance?

area of the plates. distance between the plates. the dielectric constant

On what factors capacitance of a capacitor depends on?

The job of a capacitor is to store charge onto its plates. The amount of electrical charge that a capacitor can store on its plates is known as its Capacitance value and depends upon three main factors.The surface area, A of the two conductive plates which make up the capacitor, the larger the area the greater the capacitance.The distance, d between the two plates, the smaller the distance the greater the capacitance.The type of material which separates the two plates called the "dielectric", the higher the permittivity of the dielectric the greater the capacitance.

Does increasing the plate area of a capacitor increases the capacitance?

Yes. Increasing the plate area of a capacitor increases the capacitance. The equation of a simple plate capacitor is ...C = ere0(A/D)... where C is capacitance, er is dielectric constant (about 1, for a vacuum), e0 is electric constant (about 8.854 x 10-12 F m-1), A is area of overlap, and D is distance between the plates. (This is only a good estimate if D is small in comparison to A.) Looking at this, you can see that capacitance is proportional to plate area.

State the factors determining capacitance?

The factors that determine capacitance are the area of the plates, distance separating the plates, and the dielectric constant of the materials.

Does charge on a parallel plate capacitor depend on distance between the plates?

YES, only in a case ,when the dielectric is the same and the distance between plates is increased ,this will enhance the capacitance and hence charge will be increased. SO we can say YES.

How do you use a pcb as a capacitor in filter circuit?

A capacitor is simply two conductors in close proximity to each other, but not touching. This allows a charge to build up between them. It is entirely possible to build a small capacitor with a double sided printed circuit board. The area of the plates would be semi adjustable, in that you could cut out what you don't want. You can estimate the capacitance of a parallel plate capacitor with the equation... C = er e0 S / d ... where C is capacitance in farads, er is permittivity (also called dielectric constant), e0 is the electric constant, about 8.854 x 10-12 F m-1, S is area of overlap, and d is the distance between the plates. You would need to either know or measure the dielectric constant of the circuit board - for a vacuum, p is 1 - one way to measure is to build a test capacitor and measure its capacitance in a test circuit - perhaps an oscillator - and understand that (within limits) capacitance is proportional to the area of overlap and inversely proportional to the distance between the plates. For more information, please see the Related Link below.

What is a capicitor?

A capacitor is essentially a device that develops and stores an electric charge along a circuit. It consists of two conductive plates spaced a particular distance apart, with a material known as a dielectric between them.

What will happen to the electric field of capacitor if temp of polarized dielectric is increased?

That will depend on the dielectric. There will be two main effects - any change in the permeativity of the dielectric, and thermal expansion which will increase the distance between the plates. There will also be an change (probably an increase), in leakage current through the dielectric. Any change is very likely to be small or insignificant - I have worked in a factory making capacitors and temperatures were very variable, not controlled, for measurements of capacitance.

What happens to the charge on a capacitor if the potential difference between the conductors is doubled?

As capacitance is not affected by voltage, nothing will happen! Capacitance is affected only by the area of overlap of the plates, their distance apart, and the permittivity of the dielectric.

How would introducing a dielectric between the plates of capacitor effect its capacitance?

capacitance is the ability to store a charge in a volume: C = Q / V C is the capacitance [F], Q is the charge [C], V is the voltage [V]. That is, depending on the voltage applied to a capacitor, it will store a charge between its plates. Dielectric permettivity / permeability / dielectric constant is the parameter which will tell you how your media (between the plates) is efficient at storing electrical charge: for air/vacuum you have "epsilon0" ~= 8.85e-12 F/m For example, in a parallel plates capacitor you have: C = epsilon S / d S is plate surface [m^2] and d the distance between plates [m], C is in [F] FI, epsilon is the same as the one you find in the constitutive law D = epsilon E.

How to find capacitance of two parallel plates?

You can compute it from the area of the plates, the distance between them, and the dielectric constant of whatever is between them. I'll leave it up to you to lookup the equation (or derive it if you want to get ambitious, it really isn't too hard) and find a published table of dielectric constants.

What is capacitor LS?

The distance between the leads (lead spacing) on a radial capacitor

What is the distinguish between insulator and dielectric?

A dielectric is an insulator which, when exposed to an electric field, results in the distortion of the electron orbits surrounding its fixed nucleii, and causes the polarisation of those atoms. The direction of this polarisation is opposite to that of the electric field and, therefore, acts to reduce the magnitude of the field. In the case of a capacitor, dielectrics, therefore, act to change the capacitance of a capacitor which otherwise depends upon the distance between their plates, and the area of those plates. This property is independent of a dielectric's insulating property.

What does a capacitor storage energy?

A capacitor stores energy. The fundamental idea behind a capacitor is to have two plates spaced some distance apart with a material between the two plates (a dielectric). When negative voltage is applied to one plate, electrons will build up on that plate; because of its' relationship to the other plate, it will cause electrons to be repulse from the other plate. If the voltage source is removed, the electrons that are "stored" on on plate will move back to equillibrium.

What is permittivity?

Relative permittivity or dielectric constant of a medium is defined as the ratio of force between two charges separated by a certain distance in air or vacuum to the force between the same charges separated by the same distance in the medium.According to American Heritage Dictionary:permittivitySYLLABICATION: per·mit·tiv·i·tyPRONUNCIATION: PERM eh TIV eh TEENOUN: Inflected forms: pl. per·mit·tiv·i·tiesA measure of the ability of a material to resist the formation of an electric field within it. Also called dielectric constant, relative permittivity.

What will happen to a capacitor if you move the plates closer together?

Capacitance increases as distance decreases. Here is the formula: C = k*epsilon0*A/d epsilon0= 8.854 x 10-12 Farads/meter, k is a dimensionless number related to the dielectric between the plates. A is the area of a plate, d is the distance between plates.

Does perpendicular lines have a constant distance between them?

No but parallel lines have a constant distance between them

What is mean by dielectric contants?

two equal and opposite charges seprated by a small distance.

What is the equation for calculating distance when you know the speed and time?

distance = speed x time.This assumes a constant speed.distance = speed x time.This assumes a constant speed.distance = speed x time.This assumes a constant speed.distance = speed x time.This assumes a constant speed.

What is the magnitude of the force on an electron at a distance 969 mm from the center of the capacitor along the direction normal to the plates of the capacitor?

You've specified a distance, but no force. Any answer is correct without a force specified.

Is the total distance traveled divided by constant speed eual constant speed?

No. The total distance traveled divided by constant speed is the time interval.

Why does capacitance increase when the distance between the plates of a capacitor is increased?

you have it reversed. capacitance increases with decrease in distance of plates.

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