Help with capacitor, physics [Solved]

What is the charge on each capacitor in the figure if V=20V

The trick is caps in series have the same charge and Q = VC.
V1C1 = V2C2 = V3C3 and V1 V2 V3 = 20 = V1 V1(C1/C2) V1(C1/C3) = V1(1 12/4 12/6) = 6V1
V1 = 20/6 = 10/3 V,
V2 = 10/3 * 12F/4F = 10 V,
V3 = 10/3 * 12F/6F = 20/3 V
The charge on all three caps = C1V1 = 10/3 *12F = Q1 = 40C <------ Q2 = V2C2 = 10*4F = 40C Q3 = V3C3 = 20/3*6F = 40C Check Ceq = 1/[1/12 1/4 1/6) = 2F ---> Q = CeqV =2*20 = 40C

This post is last updated on hrtanswers.com at Date : 1st of September – 2022

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