Electric circuit & missing resistance/voltage

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Homework Help Overview

The discussion revolves around an electric circuit problem involving the determination of missing resistances, currents, and voltages, particularly focusing on resistors R3 and R4 in relation to R2.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • The original poster expresses confusion regarding the calculation of R3 and questions whether R3 and R4 share the same voltage. Participants discuss the implications of resistors in parallel and the relationship between voltages across them.

Discussion Status

Participants are actively engaging with the problem, exploring the concept of voltage in parallel circuits. Some guidance has been provided regarding the voltage across R3 and R4, with a suggestion that it may equal 1.2 V, although this is still under consideration.

Contextual Notes

The original poster has attached images for reference, which may contain critical information for solving the problem. There is an indication of uncertainty regarding the relationships between the components in the circuit.

pebbles3
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Homework Statement


I'm supposed to find the missing resistances, currents, and voltages from the first picture (attached)

Homework Equations


v = IR
R = V/I
I=V/R

The Attempt at a Solution


My attempt is in the second attached picture. I'm completely lost on what to do for R3. Would R3 and R4 have the same voltage? I'd really appreciate some help with this.
 

Attachments

  • diagram1.png
    diagram1.png
    2.5 KB · Views: 444
  • diagram2.png
    diagram2.png
    3.3 KB · Views: 459
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Anyone?
 
R3+R4 is in parallel with R2. What does that tell you about the total voltage across R3+R4?
 
The voltages are the same in parallel, right? So.. would the total voltage across R3+R4 equal 1.2 V?
 
pebbles3 said:
The voltages are the same in parallel, right? So.. would the total voltage across R3+R4 equal 1.2 V?

Yes, of course.
 
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