How Do R5 and R6 Affect Vo and ia in a Circuit with Parallel Resistors?

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AI Thread Summary
The discussion centers on determining the current (ia) and output voltage (Vo) in a circuit with parallel resistors. It clarifies that R5 and R6 do not cancel out but rather have no impact on the solution since no current flows through them, resulting in no voltage drop. The correct approach involves evaluating the midpoint voltage of the two voltage dividers formed by the other resistors. The conclusion emphasizes that Vo is not 0V. Understanding the role of each resistor is crucial for accurate circuit analysis.
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Homework Statement


Nilsson-p3.27.png

Determine ia and Vo

V=0.4 V, R1 = 7kΩ, R2 = 28 kΩ, R3 = 43 kΩ, R4 = 31 kΩ

Homework Equations



V= i*R

The Attempt at a Solution



Does R5 and R 6 cancel out since the pair of parallel resistors share a common node, making Vo - 0 V?
 
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Cisneros778 said:
Does R5 and R 6 cancel out since the pair of parallel resistors share a common node, making Vo - 0 V?
They don't "cancel out" (weak terminology). There is no current going through them so no voltage drop across them. Better to say that their values are not relevant to the solution of the problem. Vo is not 0V. You have 2 voltage dividers-- evaluate the midpoint voltage of both of them.
 
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Thank you.
 
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