- #1
Gabe805
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Homework Statement
How do I get the equivilent circuit in this scenario? The battery is not directly connected within the circuit. I know how to find the equivilent resistance in situations where the battery is "inside" the circuit but I am having a little trouble with this one. The voltage and resistances are given but the current is not. I just want to know how I would deal with the battery using a kirchhoff loop equation.
http://edugen.wileyplus.com/edugen/courses/crs7165/common/art/CMS/image_n/GO_logo_i.png
In Fig. 27-46, http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math340.gif, http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math582.gif, http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math583.gif, and http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math584.gif. What are the potential differences (a) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math585.gif, (b)http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math586.gif, (c) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math587.gif, and (d) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math588.gif?
http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/image_n/w1535-nn.png
Figure 27-46
Homework Equations
1/req = 1/r1 +1/r2 1/r3...
req = r1 + r2 +r3...[/B]
The Attempt at a Solution
I tried inserting the battery in an arbitrary spot and then proceeded to find the equivalent resistances by combining parallel and series resistors into one equivalent resistance. from there I would have had all the relevant data to work backwards. I made an error somewhere and I can only assume it is because i am handling the battery in the wrong way. Any tips or suggestions would be greatly appreciated. By the way the answers at the back of the book are:(a) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math589.gif; (b) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math590.gif; (c) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math589.gif; (d) http://edugen.wileyplus.com/edugen/courses/crs7165/halliday9781118230725/c27/math/math591.gif