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franci2005
Group Title
You have a 1.0 μF, 2.0 μF and 3.0 μF capacitors. What
capacitances can you get by connecting them?
 2 years ago
 2 years ago
franci2005 Group Title
You have a 1.0 μF, 2.0 μF and 3.0 μF capacitors. What capacitances can you get by connecting them?
 2 years ago
 2 years ago

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Carl_Pham Group TitleBest ResponseYou've already chosen the best response.0
\[(1.0 + 2.0 + 3.0) \mu{\rm F}\] \[\left(\frac{1.0 + 2.0}{2} + 3.0\right)\mu{\rm F}\] \[\left(\frac{1.0 + 3.0}{2} + 2.0\right)\mu{\rm F}\] \[\left(\frac{2.0 + 3.0}{2} + 1.0\right)\mu{\rm F}\] \[\left(\frac{1.0 + 2.0 + 3.0}{3} \right)\mu{\rm F}\]
 2 years ago

NoelGreco Group TitleBest ResponseYou've already chosen the best response.1
Not quite Carl. The first one is correct for all three caps in parallel. The correct formula for capacitors in series is:\[\frac{ 1 }{ C _{Eq} }= \frac{ 1 }{ C _{1} }+\frac{ 1 }{ C _{2} }+\frac{ 1 }{ C _{3} }...\] which reduces to: \[C _{Eq}=\frac{ C _{1}C _{2} }{C _{1}+C _{2} }\] for two capacitors in series.
 2 years ago

Carl_Pham Group TitleBest ResponseYou've already chosen the best response.0
RIght you are. For some reason I had a braino and thought we were dealing with resisters. Substitute the inverses for the numbers in all the equations, and invert at the end.
 2 years ago
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