Question

Seven capacitors each of capacitance $2\mu \text{F}$ are connected in a configuration to obtain an effective capacitance $\frac{10}{11}\mu \text{F}\text{.}$ Which of the following combination will achieve the desired result?

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

In series, $\text{C}=\frac{{\text{C}}_1{\text{C}}_2}{{\text{C}}_1+{\text{C}}_2}$
and in parallel, C_eq = C₁ + C₂ + C₃.....

${\left(\therefore \text{C}\right)}_{\text{net}}=\frac{\left(10\right)\left(1\right)}{10+1}=\frac{10}{11}\mu \text{F}$