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Five identical plates of equal area A are placed parallel to each other and at equal distance d from each other as shown in the figure. The effective capacity of the system between the terminals A and B is

Options

  1. A3 5 ε 0 A d
  2. B5 4 ε 0 A d
  3. C5 3 ε 0 A d
  4. D4 5 ε 0 A d

Correct answer

C. 5 3 ε 0 A d

Step-by-step solution

Plates 1-2, 2-3, 3-4 and 4-5 form a total of four capacitors. The capacity of each capacitor is, C 0 = ε 0 A d From figure, it is clear that, C e q = 5 3 C 0 = 5 3 ε 0 A d

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