Electric Field Lines

Hello2!! Everyone...huhu

Okay, for  now...what i'm going to explain for this chapter electric fields is electric field lines...Maybe everybody already knows about this subtopic but certain not know it,...so now i will consider as our readers not know it, because sometimes we know it but already forgot, hehe...So, clear your mind and get ready,...Lets begin...

1.  What is electric field lines?

# As we know, electric field lines visualized the pattern of direction and magnitude of electric field.

# We know that electric field is a vector.. 

#  Therefore, we can represent an electric field with arrows drawn at various points around an object with charge. These electric field lines (sometimes also called lines of force) are drawn below for two simple.

#  Examples:

Notice that the lines are drawn to show the direction of the force, due to the electric field, as it would act on a positive test charge.   

- Also, the closer you get to the charge, the closer the lines are to each other. This symbolizes how the electric field gets stronger as you go closer to the source.

- If you pick a spot further out, you’ll see that the lines are not as dense there… so the field is weaker.

- At positive charges, electric field lines = come out of positive charges.

- At negative charges, electric field lines = go into negative charges.

2. What would it look like if you had these two charges close enough to each other that their field lines could interact?

Figure 1: Attraction.

-What I can tell here is, there is an attraction between these 2 charges,..

-When, the charges is opposite like the figure above, positive and negative, they will attract.

-The arrows go from the positive charge to the negative charge (in exactly the same direction we

would expect a positive test charge to move).

Figure 2: Repulsion.

# How about this figure???

-Ok, what we can see here, there is repulsion between these 2 charges, positive and positive.

# Why???

-It is because, there is the same charges...so if there is negative meets negative, the result is the same

.
Figure 3: Parallel plates with the uniform electric field.

3. Another important example of field lines comes out of the need to sometimes have a constant, uniform electric field.

- As you can see in Figure 3, the field has very different field strengths at different points… it’s irregular.

- That’s because it is made up of only two charges, so the field lines wrap around a lot.

-  If we could get a whole bunch of charges lined up evenly then we could get a more uniform electric field.

-  It is possible to set this up using two plates that are parallel to each other with opposite charges built up on them.

4. The field lines are very uniform all the way, except for a slight curvature at the ends.

- We often ignore this slight curvature, since it is very small as long as the plates have a big surface area and are close together. We just make certain not to do any experiments near the ends.

- We can say that we have a constant electric field between these parallel plates.


Okey, as an explanation as above, I hope it helps you more on understanding about electric field lines.

THANK YOU =D