capacitance

so in the 3rd diagram our teacher said we can ignore the c5 when c1/c3=c2/c4 my question is how ? like i didnt understood how we can and if in more such future circuits how will i know tht i have to skip tht capacitor
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@Gyro Gearloose
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flower
flower5d ago
Ahhh a wheatstone bridge
Sephrina
SephrinaOP5d ago
a what
flower
flower5d ago
It's called a wheatstone bridge ifirc
Sephrina
SephrinaOP5d ago
oh didnt knew tht but like how can we ignore c5
flower
flower5d ago
BYJU'S NEET
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Wheatstone Bridge of Capacitor | Physics | NEET 2021/2022 | Concept...
Relevant for Class: 12th Chapter: Capacitors Prerequisites: Wheatstone bridge, Potential Difference. A Wheatstone bridge is an electrical circuit used to measure an unknown electrical resistance/ capacitance by balancing two legs of a bridge circuit, one leg of which includes the unknown component. Here you will learn about Wheatstone bridge of...
flower
flower5d ago
Idk wither maine nahi padha But
Opt
Opt5d ago
Ok, so, look at it this way. Some charge q flows from the cell to the beginning of the junction. C1=C3 so the charge splits evenly, into q/2 and q/2 right?
flower
flower5d ago
Last year
Sephrina
SephrinaOP5d ago
ew byjus yep
Opt
Opt5d ago
And then, when it needs to flow into C2 and C4, the ratio of the charges in each is going to be the same, because they're also equal So there is no need for any charge to flow down C5 path at all Because the same charge continues in each path
Sephrina
SephrinaOP5d ago
because flowing to c2 and c4 will be more favourable?
Opt
Opt5d ago
Not favourable per se. It's more that the amount of charge already present is the correct amount to fully fill the capacitor There is no need for any exchange from upper path to lower path or vice-versa
Sephrina
SephrinaOP5d ago
didnot understood at all didnt get the last part rest all yeah i got it
Opt
Opt5d ago
The ratio of charge in C2 and C4 is the same ratio as in C1 and C3 right?
Sephrina
SephrinaOP5d ago
yeah
Opt
Opt5d ago
And the charge flowing in the two paths are already in that ratio because they split according to C1 and C3 So the ratio doesn't need to change It stays the same Because of that, no charge moves through the middle path. If any charge moved from upper path to lower path, the ratio would change, but that shouldn't happen
Sephrina
SephrinaOP5d ago
aahh okk and like c5 is connected like | what if it was connected like -- then what will happen will this still be followed?
Opt
Opt5d ago
No, then you have charge splitting into three paths in the beginning It becomes a parallel capacitors situation
Sephrina
SephrinaOP5d ago
will it become normal parallel connection then? ahh okk thnkss one more thing can we say that charge doesnt want to divide and wants to go the path where it is least divided?
Opt
Opt5d ago
No, charge wants to go on the path where it is least resisted.
Sephrina
SephrinaOP5d ago
ah okkk thnks +solved @Opt
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