Question Detail
Question
Parallel plate capacitor has capacitance C. Area doubled, distance halved. New capacitance?
Correct Answer
Option D is the correct answer.
Detailed Explanation
C = ε₀A/d. New A' = 2A, d' = d/2 → C' = ε₀(2A)/(d/2) = 4ε₀A/d = 4C.
Hint
C ∝ A/d.