R1 350 Ohms: What Current Flows at 50V?

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Homework Help Overview

The discussion revolves around determining the current flowing through a resistor (R1) with a resistance of 350 Ohms when a voltage of 50 V is applied. Participants are exploring the relationship between voltage and current in this context.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are questioning the assumption that the potential across R1 is equal, leading to confusion about the expected current. Some suggest that if the other resistors are equal, the current would be zero due to no net voltage across R1.

Discussion Status

The discussion includes various interpretations of the voltage distribution across the resistors. Some participants express uncertainty about their calculations and plan to seek further clarification from a professor. There is acknowledgment of a potential misunderstanding regarding the system setup.

Contextual Notes

Participants mention that there may have been a problem with the system affecting their results, indicating that assumptions about the circuit configuration are under scrutiny.

x^2
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Homework Statement


What current flows through resistor R1 (350 Ohms) in the figure when the applied voltage is 50 V?
prob03a_circ_comp_resis.gif


Homework Equations



V = IR ?

The Attempt at a Solution



I would have thought the answer would be zero because I thought the potential at R1 is equal (but this was incorrect). What am I missing here? I guess I don't see how the potential at this point isn't equal, and I'm not sure how to solve it now knowing that it must not be the same.

x^2
 
Last edited:
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x^2 said:
I would have thought the answer would be zero because I thought the potential at R1 is equal (but this was incorrect). What am I missing here? I guess I don't see how the potential at this point isn't equal, and I'm not sure how to solve it now knowing that it must not be the same.

x^2

If the other R's are equal, then it is 0.

With 50V applied to AB, the terminals of each side of R1 would be 25V. No net voltage, no current.
 
LowlyPion said:
If the other R's are equal, then it is 0.

With 50V applied to AB, the terminals of each side of R1 would be 25V. No net voltage, no current.

That's what I thought... I tried 0 A but it was incorrect. I'm going to talk to the prof. and see what is wrong.

Thanks!
x^2
 
x^2 said:
That's what I thought... I tried 0 A but it was incorrect. I'm going to talk to the prof. and see what is wrong.

Thanks!
x^2

The correct answer is 0 A. There was a problem with the system which was why I was getting it wrong.

Thanks for the confirmation!
x^2
 

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