For capacitors in series, the equivalent capacitance is for two capacitors:
For capacitors in parallel, the equivalent capacitance is:
C2 and C3 are in parallel.
C23 = C2 + kC3
C1 and C23 are in series.
C123 = C1(C2 + kC3)/(C1 + C2 + kC3)
The switch S is closed for a long time and charges the capacitors. There is a dielectric k in C3. Find the charge and potential on each capacitor.
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