Question 26 of 180
Three parallel plate capacitors and each of capacitance are connected as shown in figure. The effective capacitance between points A and B, when the space between the parallel plates of capacitor is filled with a dielectric medium having dielectric constant of 4, is :
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Answer: (C)
After dielectric
$\begin{aligned}
& \mathrm{C}_1=4 \mathrm{C} \\
& \mathrm{C}_1=4 \times 5=20 \mu \mathrm{~F} \\
& \mathrm{C}_2=\mathrm{C}_3=5 \mu \mathrm{~F}
\end{aligned}$
are in series which is parallel to So
$\begin{aligned}
& C_{c q}=\frac{C_1 C_2}{C_1+C_2}+C_3 \Rightarrow \frac{20 \times 5}{20+5}+5 \\
& =4+5=9 \mu \mathrm{~F}
\end{aligned}$
Correct Option (3)
$\begin{aligned}
& \mathrm{C}_1=4 \mathrm{C} \\
& \mathrm{C}_1=4 \times 5=20 \mu \mathrm{~F} \\
& \mathrm{C}_2=\mathrm{C}_3=5 \mu \mathrm{~F}
\end{aligned}$
are in series which is parallel to So
$\begin{aligned}
& C_{c q}=\frac{C_1 C_2}{C_1+C_2}+C_3 \Rightarrow \frac{20 \times 5}{20+5}+5 \\
& =4+5=9 \mu \mathrm{~F}
\end{aligned}$
Correct Option (3)
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