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reminder: members should give each h/w question its own thread

## Homework Statement

Ive got these questions and I am not quite sure where to start. if someone could point me to the equations to use for Q1 and Q4, id appreciate it. As for Q2 and Q3, I need help with how to determine if its in series or parallel and how to properly add them.

## Homework Equations

q=CV

Here is a datasheet I was told would be helpful.

## The Attempt at a Solution

so I got 3a) by doing C23 series, = (1/250 +1/250)-1 = 125uF. Then parallel with C1 = 125 + 250 = 375uF. Then series with C4 = (1/375+1/250)-1 and got 125uF.

For b) I thought of doing q= CV = 150e-12*16V = 2.4e-9. Then because capacitance is the same, V = q/C = 2.4e-9/250e-12. But that gives me 9.6V. I am supposed to get 6.4V. What am I doing wrong?[/B]

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