Electric circuit & missing resistance/voltage

AI Thread Summary
To solve for the missing resistances, currents, and voltages in the circuit, it is crucial to apply Ohm's Law (V = IR) and understand the behavior of resistors in parallel. R3 and R4, being in parallel with R2, will indeed have the same voltage across them, which is confirmed to be 1.2 V. This means that the total voltage across R3 and R4 is also 1.2 V. The relationship between the resistances can be further analyzed using the equations R = V/I and I = V/R. Understanding these principles will help in determining the unknown values 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
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  • diagram2.png
    diagram2.png
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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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