Electric Field between two plates with the same charge

AI Thread Summary
The discussion centers on calculating the electric field between two plates with the same charge, specifically positive charges. It is noted that there is no electric field between two like-charged plates, as field lines do not terminate on each other. Participants suggest using the principle of superposition to analyze the field created by a single plate and then applying it to both plates. The conversation also touches on the energy balance for a charged particle moving between these plates, emphasizing the need for understanding kinematics and electrical principles. Overall, the key takeaway is that no electric field exists between two similarly charged plates, and calculations should focus on individual plate contributions.
sina_mech
Messages
12
Reaction score
0
Hi

I'm looking for a equation (or equations) needed to calculate the electric field between to plates with the same charge. For example, two plates with positive charge.

Any help is appreciated.
 
Physics news on Phys.org
Calculating electric field strength between the plates? No field lines from either plate will terminate on the other. Field lines are between surfaces of different charge only.

Being able to draw the field of both plates? I don't think there are equations, just guidelines for understanding. All lines begin perpendicular and can not intersect.
 
Thanks for your answer. Actually I'm not really familiar with these concept. So sorry if my questions look really basic.

So, like you said, we don't have any field. now, imagine a positively charged particle passes through two positively charged plates. How can I write the energy balance for the motion of particle?

Thanks.
 
Oh man, you're going down a path I avoid like the plague. I hate those equations. First, you will have to determine the speed the particle is moving for it to have the energy to move towards two like charged plates.
 
Could you briefly give me some hints (and also names) of those equations? I think I need to solve some ODEs, I'm familiar with kinematic part (yes! mechanical engineer!) but honestly, I have no clue about the electrical part. :)

Thanks
 
Thanks Samon4.

This is the problem ( V is velocity, "a" is acceleration)

2qvum94.jpg
 
If there's nothing else in the universe, there's no field between two plates with the same charge.
 
sina_mech said:
Hi

I'm looking for a equation (or equations) needed to calculate the electric field between to plates with the same charge. For example, two plates with positive charge.

Any help is appreciated.
Can you (1) figure out the field due to a single plate, and (2) use the principle of superposition when there are two plates?
 

Similar threads

B Electric Field Created by 2 Infinite Plates
Replies
1
Views
1K
I Parallel plate capacitor, charge imbalance VS charge redistribution
Replies
1
Views
859
Max surface charge of a conductive plate
Replies
8
Views
1K
I Speed of Electricity in Plate Capacitor & Cable
Replies
18
Views
2K
What causes an electric force in one situation but not in another?
Replies
6
Views
1K
B Definition of ground potential in infinite sheet charge distributions
Replies
11
Views
2K
I Capacitor surface charge movement current, relativistic effects
Replies
2
Views
970
Electric Field Between two Parallel Conducting Plates of Equal Charge
Replies
2
Views
3K
B Some Questions about Electric Current/Capacitors to help my understanding
Replies
7
Views
2K
Electric field outside a parallel plate capacitor
Replies
7
Views
19K

Hot Threads

Recent Insights

Back
Top