Why is the electric field inside the dielectric cancelling?

AI Thread Summary
The discussion centers on the behavior of the electric field within a dielectric material inserted between capacitor plates. It highlights a misunderstanding regarding the cancellation of the electric field, with the user questioning their teacher's explanation. The key point is that the dielectric polarizes in response to the electric field, generating an opposing field that reduces the overall electric field between the plates. This polarization effect leads to a net electric field that is less than expected, affecting the force on the capacitor plates. Ultimately, the interaction between the plates and the dielectric results in a complex field behavior that can be counterintuitive.
Abhishek Das
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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.
So, what would be the force on a plate then?
 
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The reason is that the plate polarises the diaelectric and that creates the oposite field inside the other plate which cancels with the first.
 
Insight said:
The reason is that the plate polarises the diaelectric and that creates the oposite field inside the other plate which cancels with the first.
But, they are in same direction
 

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