Finding an unknow value of resistance (HELP REQUIRED )

  • Thread starter Thread starter Adamnufc1
  • Start date Start date
  • Tags Tags
    Resistance Value
Click For Summary
SUMMARY

The discussion centers on calculating the unknown resistance value (R2) in a circuit with two resistors in parallel (R1 = 470 ohms and R2) connected in series with another parallel pair (R3 = 1k ohm and R4 = 270 ohms). The supply voltage is 110 V DC, and the voltage across R3 and R4 is 60 V. The user calculated R2 to be 564 ohms using the equation V1 = (R1/(R1 + R2)) * Vin. The calculation requires verification and further assistance to ensure accuracy.

PREREQUISITES
  • Understanding of Ohm's Law and voltage division in circuits
  • Knowledge of series and parallel resistor combinations
  • Familiarity with basic circuit analysis techniques
  • Ability to manipulate algebraic equations for resistance calculations
NEXT STEPS
  • Review the principles of voltage division in parallel circuits
  • Study the calculation methods for equivalent resistance in series and parallel configurations
  • Learn how to derive unknown resistor values using circuit equations
  • Practice solving circuit problems involving multiple resistors and voltage sources
USEFUL FOR

Students studying electrical engineering, hobbyists working on circuit design, and anyone needing assistance with resistor calculations in parallel and series circuits.

Adamnufc1
Messages
2
Reaction score
0
finding an unknow value of resistance (HELP REQUIRED!)

Homework Statement



Two resistors in parallel, R1 of 470 ohms and R2 of unknow value, are connected in series with two more parallel resistors R3 of value 1kohm and R4 of value 270 ohms. The supply is 110 V dc and the potential difference across the parallel pair of resistors R3 and R4 is 60V.

Ive been looking at this question for a while and a bit of help would be greatly appreciated.

Determine the value of resistance R2


Homework Equations



V1 = (R1/R1+R2) Vin

Transposed to find R2. I've came out at an answer of 564 ohms. Anyone able to check I am correct and help me on this problem? Thanks in advance

The Attempt at a Solution


 
Physics news on Phys.org
Welcome to PF!

Hi Adamnufc1! Welcome to PF! :wink:

Show us your full calculations, and then we can see what went wrong, and we'll know how to help. :smile:
 

Similar threads

Replies
5
Views
4K
  • · Replies 3 ·
Replies
3
Views
2K
  • · Replies 7 ·
Replies
7
Views
2K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 9 ·
Replies
9
Views
8K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 18 ·
Replies
18
Views
3K
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 17 ·
Replies
17
Views
13K