Electric Field Unchanged in Parallel Plate Condenser w/ Varying Distance

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In a parallel plate condenser, increasing the distance between the plates from 4mm to 12mm does not decrease the electric field strength, which remains constant due to the uniform charge distribution. The potential difference increases to 180 volts as a result of the increased distance, following the relationship E = V/D. This relationship indicates that while the distance (D) increases, the electric field (E) remains dependent on the charge density rather than the separation distance. Gauss' law supports this by demonstrating that the electric field magnitude is determined by charge density. Therefore, the electric field remains unchanged despite variations in plate distance.
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If the distance between the plates of a parallel condensor is 4mm and the potential difference is 60 volts . Now if we increase the distance between the plates to 12mm , then

Why the electric field does not get decrease , instead of that potential difference between the condensor becomes 180 volts

As we know E= V/ D
 
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For the electric field's magnitude of the plane, where the charges are uniformly distributed, just depends on the density of charges of the plane, which can be acquired from Gauss' law, the electric field won't vary due to the distance in theory.
 
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