Phys 226 Capacitor Circuits

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Last updated 3:55 AM on 6/25/26
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10 Terms

1
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Q=CV

charge (Coulombs) = capacitance (Farad) x voltage across capacitor (Volts)

2
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combining series capacitors

1/Ceq = 1/C1 + 1/C2 + 1/C3 + …

3
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combining parallel capacitors

Ceq= C1 + C2 + C3 + …

4
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Characteristics of series capacitors

capacitors that share a corner without branches going somewhere else

5
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Characteristics of parallel capacitors

2 capacitors with the same start and end nodes, with nothing between them

6
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If capacitors are parallel, what do we know about the QVC table

same V (voltage, volts)

7
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If capacitors in series, what do we know about the QVC table

same Q (charge, coulombs)

8
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How do you start your QCV table

Find Ceq, fill out battery given, fill out given voltages for each capacitor

9
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Branch law (Kirchhoff's Law #1)

Current In = Current out (Iin=Iout). so go from the battery and down one pathway, see where the current branches out to (Vbattery=V1+V2+V3 if 3 branch directions)

10
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Loop law (Kirchhoff's Law #2)

every full loop, voltage rises (battery) and drops (resistor) cancel out. so ΔV=0 (Vbattery-V1-V2=0)