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

## Homework Statement

Ive got these questions and Im 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. Im supposed to get 6.4V. What am I doing wrong?[/B]

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