Why is the electric field constant between a parallel plate?

Jovanny O'Keefe asked a question: Why is the electric field constant between a parallel plate?
Asked By: Jovanny O'Keefe
Date created: Thu, Feb 18, 2021 1:02 AM

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Top best answers to the question «Why is the electric field constant between a parallel plate»

  • So it tells us that the closer the test, or other charge, is to the source charge ,the stronger the interaction, and also that the larger the source charge, the stronger the interaction as well. 1) What I am having trouble understanding is how the electric field between a parallel plate capacitor is constant?

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Those who are looking for an answer to the question «Why is the electric field constant between a parallel plate?» often ask the following questions:

👉 How is the electric field constant in between a parallel plate capacitor?

1) The field is approximately constant because the distance between the plates in assumed small compared to the area of the plates. The field is zero approximately outside of the plates due to the interaction of the fields generated by the two plates (They point in opposite directions outside the capacitor). 2) Yes, it is an approximation though. 3) The field is constant, but the potential goes to zero at the negative plate.

👉 Electric field between two parallel plates?

if the potential difference between the 2 plates be V & separation of the plates=d electric field=V/d directed from the lower potential plate to higher potential plate

👉 Does a parallel plate have an electric field?

030 - Electric Field of Parallel PlatesIn this video Paul Andersen explains how the electric field between oppositely and equally charged plates is uniform a...

10 other answers

1) No, the electric field from a single infinite plate is constant as well. That the electric field inside a plate capacitor is constant is only an approximation. This works for distances very close to the plates, and when you are far away from the edges of the plates.

Why will it become constant when you have two parallel plates? $\endgroup$ – John Hon Oct 20 '18 at 10:36 $\begingroup$ One answer would be : because of Gauss's law. Another way to look at this is to consider a point P at height z above an infinite plain. $\vec E$ is the vector sum of all contributions from the infinite plain.

Why is the electric field between parallel plates uniform? It is precisely because the field strength diminishes like 1/r^2 with distance from a point charge that when a charge is spread uniformly over parallel plates that have a large radius compared to their separation that the field strength over a fairly large part of the region between the plates is nearly uniform.

2) Also, while electric field changes with distance from a source charge, in between a parallel plate capacitor, the electric field is constant regardless of where you are in between the capacitor? 3) To add to that, the electric potential decreases as you go from positive to negative plate, yet the electric field doesnt.

3 Answers. For an INFINITE parallel plate capacitor, the electric field has the same value everywhere between the 2 plates. This is because the electric field lines due to an infinite plate are parallel to the normal vector to the plate.

030 - Electric Field of Parallel PlatesIn this video Paul Andersen explains how the electric field between oppositely and equally charged plates is uniform a...

In the middle of the two plate, both electric fields are opposite to each other. So, the cancel each other and the net electric field inside is zero. On left and right side, both electric fields...

so final electric field between the plates, E = q/AK ε0 = E0/K i.e., electric field reduces to 1/K times. (b) Consider a parallel plate capacitor, area of each plate being A, the separation between the plates being d. Let a dielectric slab of dielectric constant K and thickness t < d be placed between the plates.

From Equations (16)- (18), we can see that a charged parallel-plate capacitor producesa constant electric field σ ε0^j σ ε 0 j ^ in between the plates where the electric field points from the positively charged plate to the negatively charged plate and we can also see that everywhere to the "left" and "right" of the capacitor the electric field is zero.

A parallel plate capacitor with air as the dielectric has capacitance C. A slab of dielectric constant K and having the same thickness as the separation between the plates is introduced so as to fill one fourth of the capacitor as shown in the figure.

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