Here, I1 - I2 - I3 + I4 - I5 = 0
(Law of the nodes)
| Methods / ti-cas.org | |
| Law of the meshs |
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Law of the nodes / meshs / Kirchoff From circuits, use of various laws with APPlication EE200. |
Author: Olivier Miclo |
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Public: Students |
Material used: |
1) Recall of the law of the nodes and the law of the meshs.
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Here, I1 - I2 - I3 + I4 - I5 = 0 (Law of the nodes) |
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After having chosen a direction: U2 + U5 - U1 - U3 - U4 = 0 (Law of the meshs) |
2) Example with a circuit (use of APPlication EE200)
| Activate EE200 via APPS : |
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In the circuit below, calculate I1 and I2.
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Press F2 to seize the equations. |
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The editor of equation is empty, and it is necessary to seize the equations in order to solve our problem.
I2 = I + I1
and
E - R2*I1 - R1*I2 = 0
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First equation: Look at the status bar of your TI-89 when you write the equation. EE200 knows that I2 is a current ! |
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For more facility, directly replace I by its value 0.25 A. The units are available in the toolbar. (and the last unit is copied in the clipboard) |
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Equation 1... |
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Equation 2... |
We can now solve the equation with F2... #SOLVE.
I1 = 0.16 A, and I2=0.41 A.
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By leaving EE200, you will be able to use the variables generated by the software (for example, I1 and I2) |
This example is a simple example, and the aim is to show that EE200 is used as easily as the numerical solver integrated into your calculator. The functionalities are numerous.
Olivier Miclo, September 2000
