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Engineering and Comp Sci Homework Help
Calculating Thevenin Resistance and Current in a Complex Circuit
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[QUOTE="whoareyou, post: 4979386, member: 330156"] [h2]Homework Statement [/h2] The circuit looks like this: [URL]http://i.imgur.com/QtgiCdR.png[/URL] R1= 10 Ω R2= 8 Ω R3= 3 Ω R4= 5 Ω R5= 2 Ω V= 15 V I'm trying the find the current in R1 by using Thevenin's Theorem. [h2]Homework Equations[/h2] Basic Circuit Analysis Formulas [h2]The Attempt at a Solution[/h2] So I calculated the voltages at the points where R1 is removed. 15V on the left side and 90/101V on the right side (confirmed by LTspice). Then I tried to calculate the Thevenin resistance which (once the voltage source is shorted) is the R2 || R3 || (R4 + R5) which turns out to be 168/101Ω. So putting everything together now, Vth = 15 - 90/101 and Rth = 168/101 and Rl = 10, I get that the current in R1 is 1.2096A but according to LTspice, it should be 1.22003A. What am I doing wrong? [/QUOTE]
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Calculating Thevenin Resistance and Current in a Complex Circuit
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