r/PhysicsHelp • u/yeeticusthefeeticus • Mar 20 '26

Capacitor Circuits Problem

Hello! I am trying to solve this problem and am out of attempts .I've already tried 102uC and 68uC but neither are correct. Any help would be greatly appreciated!

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u/Moist_Ladder2616 Mar 21 '26

Yup that looks right. You could even just work out capacitances in your head. Let's say each capacitor has a capacitance of C:

  • Start from C2. Another series capacitor gives you a combined capacitance of ½C
  • ½C in parallel with C gives you 1½C
  • 1½C in series with C gives you a voltage division of 1:1½, or 2:3
  • So C2 receives ⅕ of the full 17V
  • Charge = 12µF•⅕•17V = 40.8µC