Hi everyone :)

Today I want to give a short explenation of the electric uniform field.  By understanding the electric field, we are for example able understand how electric energy gets transfered. 

The physics behind the electric field

The coulomb force plays a big role in the electric field. Coulomb's law tell us the about the force interaction between static, electrically charged particles. I want to write more about coulombs law later when we look at inhomougenous fields. For now, it is enough if we know same charges are repulsive and same charges attract each other.

Coulomb's law

In a homogenous electric field (uniform field), every particle in the field is constantly affected by the same force. Such a field can be created by placing two capacitator plates with parallel to each other. As we maintain a voltage between them, an electric field occurs, because of the potential difference  Δϕ  .

We can see the field lines from the positive to the negative charge above. They go from the positive to negative charge, the opposite way an electron would behave as it moves from the negative to the positive charge. How close they are to each other, is proportional to the field strength E (vector). As the force is constant in every point in the field between the plates, the field lines have the same distance, direction and are parallel.

The charge density on the plates is constant and equally distributed as long as the voltage doesn't change.

 If we want to calculate the electric field strength between the two plates, our equation for E, the electric field strength is:

E= U/d

as  it is E= F/q

E= field strength in Newton/Coulomb or Volt/Meter

U= voltage in Volt

d= distance between the plates

this german illustration show us how the equation E=U/d is derived from

E equals F divided b q. F is W/d so: E= W/d*q. Now we define W by multiplicating U with q (electric work). Then it is: (U*q)/(d*q). We can take away the q as we divide it by itself what equals 1 and have the result of E= U/d.

If we want to calculate the force, we need the following calculation:

E= F/q

q= particle of charge 

F= force (vector)

We can form it to:

F= E*q

in the uniform field:

E= U/d

E= F/q = q* (U/d)

Thanks for reading

Have a nice day :)

Source

Text

http://www.abi-physik.de/buch/das-elektrische-feld/elektrische-felder-1/ (translated)

https://de.wikipedia.org/wiki/Elektrisches_Feld (translated)

https://en.wikipedia.org/wiki/Electric_field

https://www.leifiphysik.de/elektrizitaetslehre/ladungen-felder-oberstufe (translated)

http://schulen.eduhi.at/riedgym/physik/10/elektrizitaet/kondensator/feld_konden.htm (translated)

Pictures

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/imgele/coulaw.png

http://images.slideplayer.com/38/10831144/slides/slide_7.jpg

http://schulen.eduhi.at/riedgym/physik/10/elektrizitaet/kondensator/feld_k7.gif