Combining Capacitors in Series & Parallel Video Lessons

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Problem: 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.

FREE Expert Solution

For capacitors in series, the equivalent capacitance is for two capacitors:

Ceq=C1C2C1+C2

For capacitors in parallel, the equivalent capacitance is:

Ceq=C1+C2+...+Cn

Charge:

Q=CV

C2 and C3 are in parallel.

C23 = C2 + kC3

C1 and C23 are in series.

C123 = C1(C2 + kC3)/(C1 + C2 + kC3)

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Problem Details

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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