What is the missing value in this parallel RC circuit problem?

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Discussion Overview

The discussion revolves around a parallel RC circuit problem where a participant seeks to find specific values related to the circuit, including total impedance, total current, individual branch currents, and voltage across a capacitor. The inquiry is technical in nature, focusing on circuit analysis and calculations.

Discussion Character

  • Technical explanation
  • Debate/contested
  • Mathematical reasoning

Main Points Raised

  • One participant expresses frustration over the lack of clarity in the original question, suggesting that it is difficult to understand.
  • Another participant proposes that the capacitors in the circuit form a voltage divider, leading to a voltage of 5V across each capacitor, based on their equal size.
  • The mathematical reasoning provided includes a formula for calculating the voltage across the capacitors, which is derived from the voltage divider principle.
  • There is a discrepancy noted between the calculated voltage across one capacitor (31.8V) and the expected answer (5V), prompting a request for clarification.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the clarity of the original question or the correctness of the calculated values. Multiple viewpoints are presented regarding the interpretation of the circuit and the resulting calculations.

Contextual Notes

Some assumptions about the circuit configuration and the values of components are not explicitly stated, which may affect the calculations. The discussion includes unresolved mathematical steps and differing interpretations of the voltage across the capacitors.

Who May Find This Useful

Individuals interested in circuit analysis, particularly those studying parallel RC circuits and voltage divider principles, may find this discussion relevant.

DethRose
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Parallel RC Circuit Problem!

Hey I've been working on this circuit for hours and can't figure out 1 value.
This is exactly what was given to me on the page so i have no other information lol.

All that was written was:

find the values of Zt,It,I1,I2,Vc1

Ive found all the other values which are

Zt = 1.2 k angle -10.93
It = 8.28 mA angle 10.93
I1 = 8.13 mA angle 0
I2 = 1.57 mA angle 90
Vc1 i get 31.8 v angle -90 but the given answer is 5v and 0

An explanation y it is that value would be appreciated


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l 550 ohm resistor .01 microFarad Capacitor
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10V angle 0 l l
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l 680 ohm resistor .01 microFarad Capacitor
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l frequency=5KHZ l l
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dumwit atleast type what you are asking properly
 
Well personally I would NOT call you dumbwit or any other name , but I am afraid he is correct in that I am not sure how anyone can understand your question
Ray
 
so where's the micky mouse cartoon i was promised1
 
Hi DethRose,
The capacitors are equal in size and form a simple voltage divider across the source. Regardless of the current through the capacitors, the voltage across each capacitor must logically be half of the source voltage ... 5v @ 0degrees.

[tex]V_{C1}=V_s\frac{Z_{C1}}{Z_{C1}+Z_{C2}}<br /> =V_s\frac{j\omega C1}{j\omega C1+j\omega C2}<br /> =V_s\frac{C1}{C1+C2}=V_s\frac{C1}{2C1}=\frac{V_s}{2}[/tex]

(it seems your other respondents have no imagination)
 

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