Dependent source problem using KVL

  • #1

Homework Statement:

Using KVL find the current through the resistors and Power of the dependent current source.

Relevant Equations:

nil
Hi all,

I was trying to solve this but I'm stuck as you can see in my notes below:

New Doc 2019-10-13 16.55.53_1.jpg

New Doc 2019-10-13 16.55.53_2.jpg


Using simulator the I1=3.125 A | I2=-1,857 A | I3=4,375 A and Power of the dependent current source = -46.875 W

1570976039548.png


Any idea, what could be wrong ?


Thanks.
 

Answers and Replies

  • #2
NascentOxygen
Staff Emeritus
Science Advisor
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In your loop 2 equation you're ignoring the voltage across the current source? So are you pretending it's zero volts?
 
  • #3
The Electrician
Gold Member
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Using simulator the I1=3.125 A | I2=-1,857 A | I3=4,375 A and Power of the dependent current source = -46.875 W

View attachment 251072


Any idea, what could be wrong ?


Thanks.
Since mesh1 and mesh2 share a current source, you must use the super mesh technique, combining mesh1 and mesh2 for your second equation. Have you learned the super mesh technique?
 
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