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If the capacitance of a capacitor is C = \(\frac{(εA)}{d}\) which of the following parameters is...

Physics
JAMB 2006

If the capacitance of a capacitor is C = \(\frac{(εA)}{d}\) which of the following parameters is varied when a variable capacitors is used for tuning radio sets?

  • A. constant (ε) and area
  • B. area and distance.
  • C. constant (ε) only
  • D. distance only
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Correct Answer: Option B
Explanation

In a variable capacitor, the capacitance is adjusted by changing the overlapping area of the plates (area) and/or the distance between the plates (distance). This allows for tuning in radio sets.

There is an explanation video available below.


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Explanation Video

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