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JadeEyes
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Write down the nodal equation in a matrix form and determine the current flowing through branch AC.
 2 years ago
 2 years ago
JadeEyes Group Title
Write down the nodal equation in a matrix form and determine the current flowing through branch AC.
 2 years ago
 2 years ago

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JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
Here is the circuit.
 2 years ago

JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
The answer is 2.6A. I've worked it out first by using KCL and Ohm's law at the Nodes. At that point I've considered current direction. Then, using Cramer's rule I got 12A. If we don't take into consideration current direction, i.e take it all to be positive, you obtain the answer 2.61A.
 2 years ago

JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
However, i don't understand why we don't take the current directions in this case while using KCL. Can anyone explain me the reason why.
 2 years ago

JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
KCL  Kirchoff's current law
 2 years ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
you dont take signal if current is entering in node or leaving it?
 2 years ago

JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
Yes. We don't consider whether it is leaving or entering the node, then we get the answer.
 2 years ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
if you dont using the signal then you will find in your ans a negative current
 2 years ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
dw:1348233456678:dw
 2 years ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
if you do all you currents like this all will be positive,but when you do the equations some value will be negative get it?
 2 years ago

JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
So that's why we take it that all the current is moving away from the node..??
 2 years ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
yes, you dont have to know first, the direction of current ,if you find a negative value the current is entering in node instead leaving
 2 years ago

JadeEyes Group TitleBest ResponseYou've already chosen the best response.0
Okay..!! Thanks for your help..!! Fan + medal..!! :)
 2 years ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.1
you are welcome
 2 years ago
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