Engineering Question about a circuit to be solved with Norton's theorem

  • Thread starter Thread starter link223
  • Start date Start date
  • Tags Tags
    Circuit Theorem
AI Thread Summary
When short-circuiting terminals a-b in a circuit, the 5-ohm resistor can be ignored because it is effectively in parallel with a zero-ohm resistor, resulting in zero resistance. This principle is rooted in the fundamentals of circuit analysis, specifically applying Norton's theorem. The discussion highlights a common misunderstanding among newcomers regarding the impact of short circuits on resistors. The user expresses gratitude for the clarification and acknowledges a mix-up in referencing the correct figure. Understanding these concepts is crucial for effective circuit analysis.
link223
Messages
70
Reaction score
12
Homework Statement
See picture please, it is highlighted in yellow.
Relevant Equations
Norton's theorem
Hello guys, I am new here.
I was wondering whether I could get some help about the highlighted part. What I don't understand is why we are able to ignore the 5-ohms resistor when we have short circuited terminals a-b.

Thanks in advance.
1650705027062.png
 
Physics news on Phys.org
Welcome to PF.
link223 said:
What I don't understand is why we are able to ignore the 5-ohms resistor when we have short circuited terminals a-b.
Because a zero ohm resistor in parallel with a 5 ohm, (or any other resistor) is going to be zero ohms.
 
Baluncore said:
Welcome to PF.

Because a zero ohm resistor in parallel with a 5 ohm, (or any other resistor) is going to be zero ohms.
Thanks! and thanks once again! I didn't think this through then.. makes total sense (also just noticed I was looking at fig(c) not (b) :'D) Thanks though!
 

Similar threads

Engineering Norton's Theorem -- Help checking my work please
Replies
18
Views
3K
Engineering Is my method of solving this correct? Superposition theorem
Replies
15
Views
2K
How to Calculate the Complex Op Amp in Circuit Diagram
Replies
8
Views
2K
Engineering How do I find Vth with the node voltage method?
Replies
10
Views
3K
Engineering Why is the voltage source high potential into node 1 at -12 V in this op amp problem?
Replies
15
Views
2K
Engineering Norton/Thevenin Equivalent circuits with a dependent voltage source
Replies
9
Views
5K
Engineering Diff gain of a push pull degenerated differential pair
Replies
6
Views
1K
Engineering Calculating Norton Equivalent Circuit for Complex Load Impedance
Replies
2
Views
2K
Using Norton's Theorem to Solve for Io in a Complex Circuit
Replies
10
Views
4K
Norton's Theorem: Solving Current Across Terminals a-b
Replies
4
Views
3K

Hot Threads

Recent Insights

Back
Top