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For more information, please see full course syllabus of AP Physics C/Electricity and Magnetism
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Combination of Capacitors

  • Parallel combination: the equivalent capacitance C = C1 + C2 + …
  • Series Combination: 1/C = 1/C1 + 1/C2 + …

Combination of Capacitors

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Parallel Combination 0:20
    • Two Capacitors in Parallel With a Battery
    • Electric Field is Outside
    • Point A is Directly Connected to Positive Terminal
    • Point B is Directly Connected to Negative Terminal
    • Voltage Across Capacitor
    • Energy Stored
  • Series Combination 17:58
    • Two Capacitors Connected End to End With a Battery
    • Equivalent Capacitor
    • A is Same Potential
    • C is Same Potential
    • Potential Difference Across First Capacitor (Va-Vb)
    • (Vb-Vc) is Potential Difference Across Second Capacitor
    • Energy Stored in C1,C2
  • Example 31:07
    • Two Capacitor in Series, 2 in Parallel, 3 in Parallel, 1 Capacitor Connected
    • Final Equivalent Circuit
  • Extra Example 1: Four Capacitors
  • Extra Example 2: Circuit with Switches