# Capacitance problem

Discussion in 'Electronics Homework Help' started by shorteddiode, Sep 29, 2012.

1. ### shorteddiode

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0
Mar 23, 2011
I have been fighting with this problem for hours. If I am thinking right if C3 shorts out it would be like the cap wasn't there and a wire was there instead.
So I figured C2 and C4 as parellel caps and added them together and which makes 0.02uF. The figured C1 and the 0.02 as a series circuit. I keep getting 0.12 as an answer, which as you can see is not an option. What am I doing wrong??
If all the caps are good wouldn't the capacitance be 0.15uF? If not I screwed up the other question too.
I hope someone can explain this to me.

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2. ### (*steve*)¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥdModerator

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Jan 21, 2010
Does shorting C3 short anything else out?

3. ### Harald KappModeratorModerator

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Nov 17, 2011
Your calculation of a series capacitance is correct, but not applicable here. Think about Steve's question. It should lead you to the correct answer.