Why is the electric field inside the dielectric cancelling?

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SUMMARY

The discussion centers on the behavior of electric fields in capacitors when a dielectric material is introduced. It is established that the dielectric polarizes in response to the electric field from the capacitor plates, generating an opposing electric field that effectively cancels the field within the dielectric. This phenomenon results in a reduced electric field strength between the plates, which directly influences the force experienced by the plates. The key takeaway is that the polarization of the dielectric leads to a net cancellation of the electric field inside the dielectric material.

PREREQUISITES
  • Understanding of capacitor theory and operation
  • Knowledge of dielectric materials and their properties
  • Familiarity with electric field concepts and polarization
  • Basic grasp of electrostatics and force interactions
NEXT STEPS
  • Study the principles of dielectric polarization in detail
  • Explore the mathematical derivation of electric field strength in capacitors with dielectrics
  • Learn about the effects of different dielectric materials on capacitor performance
  • Investigate the relationship between electric field strength and force on capacitor plates
USEFUL FOR

Students of physics, electrical engineers, and anyone studying capacitor design and behavior in the presence of dielectric materials.

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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