Why is the electric field inside the dielectric cancelling?

Apr 2017
2
0
So, I was studying force between the plates of a capacitor when a dielectric is inserted.

Here is my question

https://ibb.co/cenvXk

Shouldn't it be like this picture below

https://ibb.co/kOUsCk

So, why is my teacher saying that the electric field inside the dielectric cancelling.



Even when I did the simulation, I found out that there was some electric field in the dielectric. Check it out

https://ibb.co/gyv1xk

So, what should be the force between the capacitor plates. Kindly give me the formula and explanation.
 
Nov 2013
552
30
New Zealand
Does he mean the region outside the plate is cancelling? This is how I saw it taught in another video:

[youtube]FLzJ2_DfNX0[/youtube]