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The capacity of a parallel plate capacitor where 'A' is the area of each plate, 'd' the separation between them and with vacuum between the plates is given as?

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SSC Scientific Assistant Physics Official Paper (Held On: 22 Nov 2017 Shift 2)
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  1. C = єo Ad
  2. C = єo/(Ad)
  3. C = єoA/d
  4. C = єoA/d2

Answer (Detailed Solution Below)

Option 3 : C = єoA/d
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CONCEPT:

Parallel Plate Capacitor:

  • A parallel plate capacitor consists of two large plane parallel conducting plates of area A and separated by a small distance d.

Mathematical expression for the capacitance of the parallel plate capacitor is given by:

Where C = capacitance, A = area of the two plates, εo = permittivity of free space and d = separation between the plates.

EXPLANATION:

C = єoA/d

So option 3 is correct.

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