How Do You Solve Capacitance and Voltage in This Capacitor Network?

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Homework Help Overview

The discussion revolves around a problem in the subject area of capacitance and electrical circuits, specifically focusing on a network of capacitors involving series and parallel configurations. The original poster expresses confusion regarding the calculation of net capacitance and the subsequent voltage across each capacitor when a voltage is applied.

Discussion Character

  • Exploratory, Problem interpretation, Assumption checking

Approaches and Questions Raised

  • The original poster attempts to calculate the net capacitance using the formula for capacitors in series and parallel but initially arrives at an incorrect value. Some participants suggest clarifying the steps taken in the calculations. Others inquire about the voltage distribution across the capacitors after determining the net capacitance.

Discussion Status

The discussion has progressed with some participants successfully finding the net capacitance after initial confusion. There is an ongoing exploration of how to calculate the voltage across each capacitor in the network, with questions being raised about the specific voltages across the individual capacitors.

Contextual Notes

Participants are working under the constraints of a homework assignment, which may impose specific methods or approaches to solving the problem. There is a focus on ensuring the correct interpretation of series and parallel capacitor combinations.

traceurnin
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I am really confused on how to solve this Physics question. I attempted the first one but is wrong for some reason.

A 7.0 micro F and a 3.0 micro F capacitor are connected in series and this combination is connected in parallel with a 4.4 micro F capacitor.

a) What is the net capacitance?
b) If 24 V is applied across the whole network, calculate the voltage across each capacitor.

For part a, i tried to do:

1/Net Capacitance = 1/(7+3) + 1/4.4 and got 3.056 for the net capacitance. However, it is saying that i am wrong. Can you tell me what i am doing wrong?
 
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First find the capacitance of the series combination. What is it?
 
haha nvm i get part a

for part a i got 1/7 + 1/3 and took the inverse of that then added it to 4.4 XD

how do you do part b?
 
You have a 1/7 + 1/3 μF capacitor in parallel with a 4.4 μF capacitor. What is the voltage across the 4.4 μF capacitor? What is the voltage across the 1/7 + 1/3 μF combination capacitor?
 

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