Hello every body can you help me to solve this problem
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MOD NOTE: Moved to Homework HelpHello every body can you help me to solve this problem
Yes, we can HELP you, but we won't just do it for you. YOU need to post YOUR best attempt to solve YOUR homework (regardless of whether it is assigned homework or not). That gives us the ability to see what you are doing right and what you are doing wrong and to help guide you back onto the right path.Hello every body can you help me to solve this problem
can you help me solve this homework and show me the solution
In case you missed Post #3:can you help me solve this homework and show me the solution
There is a simple technique for writing node equations as demonstrated below for a generic 'Node Z'. A node equation is concerned with a single node and its direct connection to adjacent nodes  any other nodes in the circuit have been faded away. Use 'Node Z' as a template for writing the node equations for all remaining nodes (except the ground node). With this method, current flowing out of the node is positive, so if there is a current source forcing current to flow into a node then it will be written as negative in the node equation.My question is, do you know how to write equations for Nodal Analysis
Hi,
Yes, but did you try it yourself? This forum usually requires the person who asks to post their first attempt to solve it, unless you are totally in the dark in which case we would have to start with a simpler problem first so you can get that going.
My question is, do you know how to write equations for Nodal Analysis, or any other type of analysis really?
Did you learn any circuit analysis techniques yet, and if so, which ones?
There is a simple technique for writing node equations as demonstrated below for a generic 'Node Z'. A node equation is concerned with a single node and its direct connection to adjacent nodes  any other nodes in the circuit have been faded away. Use 'Node Z' as a template for writing the node equations for all remaining nodes (except the ground node). With this method, current flowing out of the node is positive, so if there is a current source forcing current to flow into a node then it will be written as negative in the node equation.
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Sorry, I see now that I should have started my reply with, "For the benefit of the nowabsent OP....."I am not really sure why you are telling me this...
That's a shame, because some circuits are trivially easy with mesh but much more complicated with node and other circuits are the other way around. So when you voluntarily limit yourself to using a single technique you are forcing yourself to do a lot more work  and increase the odds of making a mistake  than if you are able to choose the right tool for the right job.But now I can say that I have not used mesh analysis in a very long time.
But those circuits are likely contrived homework problems, whereas in my world of analyzing signal voltages the primary concern is not to make the trivial mistakes which I find happens all too often when using mesh analysis or clever transformations. One must find the right path within their own limitations. Also, complexity is not usually a concern when using a symbolic algebra engine for calculation.That's a shame, because some circuits are trivially easy with mesh...
I seem to remember that you had a derivation of the deltawye transformation in your blog, but it isn't there now. Am I misremembering? If I'm remembering correctly, why did you remove it?Good points. And I must admit that I very seldom use things like deltawye transforms, even though they can significantly reduce the work load for some problems, because I can't remember the formulas and so first I have to take a couple minutes to derive them. I know people that memorize formulas for mesh and node analysis, and I just shake my head since both are nothing more than formalized, but direct, applications of KVL and KCL, which should be part of the marrow of one's bones by the end of Circuits I  but then again I have seen plenty of grad EE students that still have to look up KVL and KCL if it has been more than a few weeks since they used them. I can only shake my head and weep.
I've never seen more than one nodal method. What is a nodal method that is different from the one you show in post #10? Can you briefly explain the difference, or provide a link to an explanation on the web?Sorry, I see now that I should have started my reply with, "For the benefit of the nowabsent OP....."
I can still remember when mesh analysis was my preferred approach and I just didn't grok node equations, probably because I was first taught one of those *OTHER* nodal methods. But now I can say that I have not used mesh analysis in a very long time.
I didn't have that in the blog, but rather I wrote a Technical Article for the commercial side of the site. I think it's still there.I seem to remember that you had a derivation of the deltawye transformation in your blog, but it isn't there now. Am I misremembering? If I'm remembering correctly, why did you remove it?
They would all be variants on a theme. Some people work with currents flowing into the node, some with currents flowing out. Some put all the terms on one side and some put the terms with unknowns on one side and knowns on the other.I've never seen more than one nodal method. What is a nodal method that is different from the one you show in post #10? Can you briefly explain the difference, or provide a link to an explanation on the web?
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