Adding up capacitors in series/parelle, the book got a slighty diff answer?

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Homework Help Overview

The discussion revolves around the calculation of equivalent capacitance for capacitors in series and parallel configurations. Participants are examining discrepancies between their results and those presented in a textbook.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the formulas for adding capacitors in series and parallel, questioning the rounding of results in the textbook. Some express confusion regarding the problem setup and seek clarification on the specific issue being addressed.

Discussion Status

There is an ongoing exploration of the problem, with some participants suggesting that significant digits may be influencing the textbook's answer. Others have confirmed their calculation techniques are correct, indicating a productive exchange of ideas.

Contextual Notes

Participants are considering the impact of significant digits on their calculations, and there is mention of a visual reference to the problem that is not accessible to all. The original poster's work is referenced but not fully detailed in the discussion.

mr_coffee
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Hello everyone, I'm confused on why I'm missing this problem. Here is my work and problem:
http://suprfile.com/src/1/25o5ux/lastscan.jpg

Any ideas?
I know you add up capitors in series like
(c1)(c2)/(c1+c2)

in parellel
c1 + c2 +...+cn
 
Last edited by a moderator:
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it seems to book has rounded down the result!
 
mr_coffee said:
Hello everyone, I'm confused on why I'm missing this problem. Here is my work and problem:
http://suprfile.com/src/1/25o5ux/lastscan.jpg

Any ideas?
I know you add up capitors in series like
(c1)(c2)/(c1+c2)

in parellel
c1 + c2 +...+cn

I am presuming the book is using significant digits. Even though it isn't correct most books would interpret "10" as having two digits.

-Dan
 
Last edited by a moderator:
I can't even figure out what "problem" you're trying to solve here. I just see a bunch of different chains of capacitors and a bunch of math scrawled everywhere.

- Warren
 
I'm assuming you require the sum capacitance?
 
I suggest working out the value in full, without rounding at any stage.
 
Thanks everyone, i was just making sure my technique was right which it was and i did the next problem with inductors and it worked out fine.
 

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