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Artificial Intelligence and Soft Computing: Behavioral ... - Arteimi.info

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V<br />

=<br />

Now assuming the values of V, R1, R2 <strong>and</strong> R3, we find the dotted box of fig.<br />

19.4 (c) that yields<br />

10=5I1 + (100 I1 /20)<br />

⇒I1 =1 A.<br />

I1R1<br />

+<br />

I1R2R3/(R2+R3)<br />

=<br />

=<br />

*<br />

Fig. 19.4 (c): A further simplified constrained network of fig. 19.4.<br />

*<br />

It may be added that for finding the solutions, the constraint network<br />

should be simplified with the substitution of the given variables as early as<br />

possible. Also note that some part of the constraint network may not be useful<br />

for finding the solution of the problem.<br />

Here V3=I3*R3 part of the network has not been used in fig. 19.4 (c) for<br />

evaluating I1. However, if V3 was to be computed then we had to use this<br />

constraint at the last step. Lastly, it is needless to say that the simplified<br />

constraint networks are equivalent.<br />

I1<br />

R1<br />

I1R3/(R2+R3)<br />

R2<br />

I2<br />

=<br />

+<br />

R3<br />

I3<br />

*<br />

=<br />

V3

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