Find the charge on capacitor $C_3$

Given, that $C_1=C_2=C$ and $C_3=C_4=3 C$.

Medium
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(a)

$C_{\text {net }}=2 C$

$q=2 C V$

$\frac{q_1}{q_2}=\frac{1}{3}$

$3 q_1=q_2$

$q_1+q_2=2 CV$

$q_1=\frac{C V }{2}$

$q_2=\frac{3 CV }{2}$

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