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Which of these statements about a capacitor are correct or incorrect?

1. The capacitance is proportional to distance between plates.
2. The capacitance is proportional to the surfaces of the plates.

  • A
    1 is correct, 2 is correct.
  • B
    1 is incorrect, 2 is correct.
  • C
    1 is incorrect, 2 is incorrect.
  • D
    1 is correct, 2 is incorrect.
C = e x (A/D)
Therefore, we can deduct the following affirmations:
  1. The capacitance is directly proportional to the dielectric permittivity. If permittivity increases, capacitance increases as well.
  2. The capacitance is directly proportional to the area of the capacitor’s plates. If the area of the plates increases, the capacitance increases as well.
  3. The capacitance is inversely proportional to the distance between the capacitor’s plates. If the distance between the plates increases, the capacitance decreases.

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