Equivalent capacitance; complex circuit

AI Thread Summary
The discussion focuses on finding the equivalent capacitance of a complex circuit involving multiple capacitors. The user initially attempts to simplify the circuit by calculating the equivalent capacitance of capacitors C2, C3, and C4, but struggles with the subsequent connections. Suggestions are made to group the capacitors into manageable sections, leading to a clearer path for calculating the overall equivalent capacitance. The proposed grouping effectively simplifies the circuit analysis. Ultimately, the user successfully resolves the problem with the provided guidance.
aak5789
Messages
2
Reaction score
0
[SOLVED] Equivalent capacitance; complex circuit

Homework Statement



Hello, I was assigned a problem where we are supposed to find the equivalent capacitance of a circuit, and then use that to answer some other questions. However, I'm not sure how to handle this circuit.

http://img206.imageshack.us/img206/3756/circuitph8.th.gif


Homework Equations



We're using the equations where C(series) = (C1^-1 + C2^-1 +...)^-1 and C(||) = C1 + C2 + ...


The Attempt at a Solution



My immediate thought was to find the equivalent capacitance of C2, C3 and C4 using C234 = C2 + (C3^-1 + C4^-1)^-1. But, after that I'm not quite sure what to do, since the capacitors are now connected in a pattern where C1 and C234 connect together on a path that connects between C5 and C6. I didn't post the numbers for each capacitor as I figure I don't need to burden you with number crunching, but any ideas on how to simplify this circuit would be immensely helpful. Thanks.
 
Last edited by a moderator:
Physics news on Phys.org
My suggestion is to group as follows:

1. CA = C3+C4
2. CB = C5 + (CA) + C2
3. CC = C6+C1
4. CD = CC+CB

With the + symbol indicating the equivalent capacitance which is not necessarily an addition.
 
Thank you very much, that did the trick.
 
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Trying to understand the logic behind adding vectors with an angle between them'
My initial calculation was to subtract V1 from V2 to show that from the perspective of the second aircraft the first one is -300km/h. So i checked with ChatGPT and it said I cant just subtract them because I have an angle between them. So I dont understand the reasoning of it. Like why should a velocity be dependent on an angle? I was thinking about how it would look like if the planes where parallel to each other, and then how it look like if one is turning away and I dont see it. Since...
Back
Top