Lab Practical Circuit. Find Unknown Resistance.

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Homework Help Overview

The discussion revolves around a lab practical involving a circuit where the goal is to determine an unknown resistance (R2) using voltage measurements, with a known resistance (R3) of 1000 ohms.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • The original poster considers measuring the voltage across R3 and the current through it to calculate R2 using Ohm's Law, questioning if this approach is correct.

Discussion Status

Some participants acknowledge the method proposed by the original poster as acceptable, indicating a level of agreement on the approach without reaching a definitive conclusion.

Contextual Notes

There are mentions of an attachment that was initially not included, which may contain relevant information for the discussion.

pradeepk
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Homework Statement


Circuit.png


So I have to wire the circuit and find R2 by only making another voltage measurement. We know that R3 is equal to 1000 ohms.

Homework Equations





The Attempt at a Solution



So I was thinking that you can find the voltage of R3 and the find the current going through R3. When you have those measurements, you can find the R2 because you know the potential difference by (6-Voltage of R3). Then you use the current found previously, and the ohms law. Is this correct? Thank you
 
Last edited:
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Pradeepk, it would appear that your attachment isn't actually attached.
 
gneill said:
Pradeepk, it would appear that your attachment isn't actually attached.

My apologies..it should work now
 
pradeepk said:
My apologies..it should work now

Yes, it's fine now.

Your method for finding R2 is okay.
 

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