Answered: 25 5 V A + ΙΩ + + 2V I 2Ω I, D C + 12…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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Question

Hi, I have been given this circuit to analyse (see picture attached) and I solved the first part using KVL by finding i1= +1.984A, i2= - 0.215 and i3= -1.769. I now need to find Vab for which I have been given the solution: VAB = VAC + VCB= (2 – i1) + (4 + 3 i2). What I don't understand is why in this equation there is a minus in front i1. When I did the same equation but I had a plus I didn't get the right result, but I don't see why Vac seems to be a subtraction rather than a sum. I hope you can help me figure this out.

25
5 V
A
+
ΤΩ
+
+
2V
I
2Ω
13
D
+
12
10 V
4Ω
4V
+3 Ω
ΖΩ
B

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