-EquinoX- said:Homework Statement
http://img11.imageshack.us/img11/667/efieldmm3.th.jpg
Can someone please explain to me why the electric field inside is double of what's the outside based on the picture above? I don't understand what the green and red line is...
Homework Equations
The Attempt at a Solution
-EquinoX- said:There's no explanation in the text and that's why I am asking...
Basically all I know is:
When two plate of different charge are placed near each other, the two E-fields between the plates add while the E-field outside the plate cancel.
But whyyyy? Which ones of which cancel out?
Delphi51 said:Looks like the red E fields are due to the positive charge on the left plate and the green E fields are due to the negative charge on the other plate. They should have coloured the charges to make that clearer.
The diagram is saying that, on the left side of the parallel plates, there is an E away (left) from the positive charges and an E toward (right) the negative charges. These tend to cancel out. At a distance large compared to the separation of the plates, they would completely cancel out making the E field zero.
-EquinoX- said:When it does contain a net charge it's a non-zero and when it doesn't, it's zero right?
The electric field between two charged plates is a region in space where a force is exerted on a charged particle due to the presence of two oppositely charged plates. This force is caused by the electric charges on the plates and is represented by the direction and strength of the electric field lines.
The strength of the electric field between two charged plates is calculated by dividing the magnitude of the charge on one plate by the distance between the two plates. This value is also affected by the type of material the plates are made of and any insulating materials between them.
The direction of the electric field between two charged plates always points from the positively charged plate to the negatively charged plate. This direction can be visualized by imagining a positive test charge placed between the plates and observing the direction of the force it experiences.
The distance between the two charged plates affects the strength of the electric field. As the distance increases, the electric field decreases and vice versa. This is because the electric field lines between the plates become more spread out, resulting in a weaker overall field.
The electric field between two charged plates is used in electronic devices to control the movement of charged particles, such as electrons. By adjusting the strength of the electric field, the speed and direction of the particles can be manipulated, allowing for the functioning of various electronic components such as capacitors and transistors.