How a polarized dielectric reduces the external electric field inside it?
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If we have a dielectric inside an electric field, the dipoles in the dielectric will align in the following direction due to the torque on them by the external field.
The conclusion then is that the overall field is reduced since positive charges appear on the bottom plate and negative on the top, opposite to the applied field.
But if we consider the field of the electric dipole itself, we know that it points in the same direction as the dipole moment.
The dipole moments clearly point in the same direction as the applied field.
The conclusion then is that the overall field is reduced since positive charges appear on the bottom plate and negative on the top, opposite to the applied field.
But if we consider the field of the electric dipole itself, we know that it points in the same direction as the dipole moment.
The dipole moments clearly point in the same direction as the applied field.
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