Three capacitors of equal capacitance, when connected in series have net capacitance C1 and when connected in parallel have net capacitance C2. The ratio of C1 and C2 is
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → \( \displaystyle\frac{1}{9} \)
For n identical capacitors C, the series combination gives C/n and the parallel combination gives nC.
\( \displaystyle C_1 = \frac{C}{3} \)
\( C_2 = 3C \)
\( \displaystyle \frac{C_1}{C_2} = \frac{C/3}{3C} = \frac{1}{9} \)