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easyMCQNEET (UG) 20182026Physics
1 mark

The electrostatic force between the metal plates of an isolated parallel plate capacitor having a charge and area , is:

  1. A
    Proportional to the square root of the distance between the plates
  2. B
    Linearly proportional to the distance between the plates
  3. C
    Independent of the distance between the plates
  4. D
    Inversely proportional to the distance between the plates

Solution & Step-by-step Explanation

The force between the plates of a capacitor is given by:

where is the electric field produced by one plate at the location of the other:

So, .This expression does not contain the distance ' ' between the plates. Therefore, the force is independent of the distance between the plates.

Practice this question

Try it yourself before checking the explanation above.

The electrostatic force between the metal plates of an isolated parallel plate capacitor having a charge and area , is:
A
Proportional to the square root of the distance between the plates
B
Linearly proportional to the distance between the plates
C
Independent of the distance between the plates
D
Inversely proportional to the distance between the plates

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