Solving Capacitor Circuit: 3uF, 6uF, 2uF, 4uF & 90V

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    Capacitor Circuit
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Homework Help Overview

The discussion revolves around a capacitor circuit involving capacitors of 3 µF, 6 µF, 2 µF, and 4 µF, with a voltage supply of 90V. Participants are analyzing the configuration and calculations related to the capacitors in series and parallel.

Discussion Character

  • Mixed

Approaches and Questions Raised

  • Participants discuss the calculations for equivalent capacitance in series and question the accuracy of initial results. There is an exploration of the relationships between voltage, charge, and capacitance, with some participants checking their calculations against expected outcomes.

Discussion Status

Some participants have identified errors in their calculations and are revising their approaches. There is acknowledgment of correct concepts being applied, but discrepancies in numerical results remain a point of discussion. The conversation reflects a collaborative effort to clarify misunderstandings and verify calculations.

Contextual Notes

Participants are working under the constraints of homework rules, which may limit the information they can share or the methods they can use. There is an emphasis on ensuring calculations align with the total voltage of 90V across the circuit.

brittydagal
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Homework Statement



the question - http://tinypic.com/r/14l37yv/6
its a little hard to see but the top left capacitor is 3 uF, the one to its right *(in series) is 6 uF, the one on the bottom left is 2 uF, the one in series with the 2uF one is 4 uF and on the bottom is 90V.

Homework Equations



V = IR
C = Q/V
Series = same Q
Parallel = Same V

The Attempt at a Solution



part 1 of my work - http://tinypic.com/r/jtpd0p/6
part 2 of my work - http://tinypic.com/r/2lkbdww/6
 
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How did you calculate (a)? It is wrong. I think you forgot to take inverse values somewhere. Working with units would help here.
As additional check, you could calculate the potential difference at the top left capacitor. The sum of that and your result in (b) should add up to 90, but it does not.
 
UGHH i totally see what i did. dangit
i was doing
1/3 + 1/6 = .5
but I am pretty sure its suposed to be
1/3 + 1/6 = 1/x ----> which would make the combination of the top to uF equal 2 instead
 
..so would A) equal 3.3 uF then?
 
And was I doing B on the right track than? just my numbers were messed up?
 
10/3µF, which is about 3.3µF, right.
The concepts for b-d are fine.
 
It worked out perfectly :) thanks
 

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