Equivalent Resistor Calculation for Series and Parallel Circuits

AI Thread Summary
The discussion focuses on calculating the equivalent resistance of a complex circuit involving both series and parallel resistors. Participants emphasize the importance of redrawing the circuit to clarify connections, particularly regarding the arrangement of the 9Ω and 40Ω resistors. After performing the necessary calculations, the equivalent resistance is confirmed as 20Ω. The conversation highlights the step-by-step approach to solving such problems, ensuring accuracy in the calculations. Redrawing the circuit is deemed crucial for visualizing the relationships between the components.
ongxom
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Homework Statement


X7CzNJC.png


Calculate equivalent resistor

The Attempt at a Solution


Req=(10 series 5)//(10)//(3)//(2)//(9 series 40) series 8//(4)

I am not sure in the bolded text, is 9Ω connected serially with 40Ω.
 
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Nope. Redraw your circuit after performing the "(10 series 5)//(10)//(3)//(2)" operations.
 
Do it yourself and see.
 
As said above, redraw the circuit. You have the equivalent resistance of the unbolded text correct. redraw the circuit and you should see it is similar to what you have already done.
 
First : [(10 series 5)//(10)//(3)//(2)] series 9 = 10Ω
Redraw the circuit
WpS4S0j.png

Req = (40//10) series 4 series 8 = 20Ω
 
Yup. Looks good.
 

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