- #1
Cici2017
Homework Statement
Homework Equations
The Attempt at a Solution
E=kq/r2
so when the distance increase E should decrease?
I know this is wrong, but can someone explain why? Thanks
Electric field strength between charged plates
- Thread starter Cici2017
- Start date
In summary, the conversation discusses the concept of electric field strength, which is represented by the equation E=kq/r^2. It is mentioned that as distance increases, the field strength decreases. However, this may not always be the case as the geometry of the system can also affect the field strength. The use of gaussian surfaces is suggested to better understand this concept. Ultimately, it is important to consider the specific geometry when determining the strength of an electric field.
E=kq/r2
so when the distance increase E should decrease?
I know this is wrong, but can someone explain why? Thanks
- #2
- 41,450
- 9,896
Have you tried sketching the field lines?Cici2017 said:
- #3
Cici2017
field lines are from + to negative. vertical.haruspex said:
- #4
willem2
- 2,127
- 391
Cici2017 said:
The field strength is equal to the density of the field lines, what can you say about that if all the field lines are vertical?
- #5
- 8,032
- 869
Have you covered gaussian surfaces in electrostatics yet?
- #6
Dadface
- 2,489
- 105
Cici the field at any point depends, amongst other things, on the geometry of the system. The equation you used gives the field due to an isolated point charge. And yes,this particular field does weaken with distance. The field for other geometries is different so for your parallel plates take the advice given above.
- #7
Cici2017
I think I have got it. Thank you!
Related to Electric field strength between charged plates
1. What is the formula for calculating the electric field strength between charged plates?
The formula for calculating the electric field strength between charged plates is E = V/d, where E represents electric field strength, V represents the potential difference between the plates, and d represents the distance between the plates.
2. How does the distance between the charged plates affect the electric field strength?
The electric field strength is inversely proportional to the distance between the charged plates. This means that as the distance between the plates increases, the electric field strength decreases, and vice versa.
3. What factors affect the electric field strength between charged plates?
The electric field strength between charged plates is affected by the magnitude of the charges on the plates, the distance between the plates, and the dielectric constant of the material between the plates.
4. How is the direction of the electric field between charged plates determined?
The direction of the electric field between charged plates is always from the positively charged plate to the negatively charged plate.
5. What is the unit of measurement for electric field strength?
The unit of measurement for electric field strength is Newtons per Coulomb (N/C) or Volts per meter (V/m).
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